Climate change sparks heated debate today over its causes and solutions, but it wasn’t only a modern concern. In fact, the forces of climate have been shaping humanity for millennia—these are 10 ways climate has left its mark on our story.

10 Ways Climate Influences History

10 It Shaped Our Evolution

A wealth of archaeological and genetic evidence shows that major leaps in human evolution line up with dramatic climate shifts. About three million years ago, the first members of the genus Homo appeared just as Africa was transitioning from dense forests to sprawling savannas, forcing our ancestors to trade tree‑climbing for long‑distance walking.

That drying of the continent also reshaped diets. Early hominins no longer could rely on nearby fruit and had to become clever foragers, tracking seasonal resources across greater distances. These pressures nudged physiological and cultural changes that echo through our species today.

9 It Accelerated Stone Age Innovations

Scholars still debate how climate turbulence spurred the creative burst of our Stone Age forebears. One popular view, popularized after a 2013 study, argues that erratic weather pushed Homo sapiens to invent new tools, symbols, and ornaments as a survival strategy.

A rival theory, emerging from 2016 research, suggests that periods of climatic stability gave early humans the leisure to experiment, leading to breakthroughs independent of environmental stress. While the record shows a flurry of innovation during volatile times, the exact role of climate remains an open question.

8 Climate Change Led To Man’s Early Migrations

Our species first ventured out of Sub‑Saharan Africa when a pronounced warming phase transformed the arid northeast corridor into greener grasslands teeming with game, opening routes toward the Middle East, Asia, and Europe about 70,000 years ago.

Glacial retreats also exposed land bridges, most famously the Beringian connection between Siberia and Alaska, allowing humans to step onto the New World once ice sheets receded.

7 The Rise And Fall Of Mesopotamia

Around 12,000 years ago, the Fertile Crescent blossomed under a wet climate, giving rise to the first complex societies that harnessed the abundant rivers of Mesopotamia.

Roughly six thousand years later, abrupt droughts swept the region, prompting the abandonment of major settlements and paving the way for the ascent of cultures in North Africa and Europe as the climate turned hostile.

6 Climate Change Destroyed The Southwestern Native Americans

The Anasazi thrived in the American Southwest during a cooler, wetter interval three millennia ago, turning what is now a desert into a fertile homeland.

A severe drying event around AD 300 forced the Anasazi to disperse, and later climatic swings around AD 700 revived habitation for the Pueblo peoples, only for another downturn 650‑450 years ago to end their dominance, leaving the region largely unpopulated.

5 Droughts Brought Down Several Empires

Ancient Egypt’s golden age rested on a lush Nile valley, but a string of severe droughts between 1250 and 1100 BC weakened the kingdom, and it never fully recovered its former might.

Similarly, Greece suffered a three‑century drought from 1200‑850 BC, and the Roman Empire felt chronic water shortages beginning around AD 250, contributing to its eventual collapse.

4 Climate Change And Genghis Khan

Mongol conquests rode on a surprisingly favorable climate. After a harsh drought in the late 1100s, the early 13th century brought abundant rainfall, greening pastures and fattening the massive horse herds that powered Genghis Khan’s armies.

Ironically, those same fertile conditions in neighboring Song China kept the empire well‑supplied, limiting Khan’s advance into the south, while the Mongols themselves helped draw down atmospheric CO₂, offsetting roughly a year’s modern gasoline emissions.

3 The Spread Of The Black Plague

The Black Death claimed roughly 25 million lives across Europe and Asia between 1347 and 1353, traditionally blamed on rat‑borne fleas.

Recent research ties the pandemic to the Medieval Warm Period, when rising temperatures suppressed rodent populations, forcing the Yersinia pestis bacterium to seek human hosts, a pattern that still echoes in parts of Asia today.

2 Climate Change Let The Spanish Empire Subjugate The Americas

When Spanish conquistadors arrived, the Americas were already reeling from prolonged droughts that had weakened the Maya, whose zenith between AD 440‑660 depended on abundant rains.

A mega‑drought from 660‑1000 BC crippled the Maya, and a later severe dry spell in the 16th century sapped the Aztec Empire, leaving only 1.2 million people a century after the Spaniards first encountered the 25 million‑strong civilization.

1 Climate Change And Islam

The Arabian Peninsula endured harsh droughts during the 7th century, pushing nomadic tribes into tight‑knit communities for survival; exile meant certain death.

In AD 615, Muhammad’s followers faced exile, but by forming a new tribe in 622 they created a resilient social structure that leveraged the climate‑driven pressures, eventually spreading northward and laying the foundations of a sprawling Islamic empire.

+ Further Reading

Throughout Earth’s past, climate swings have sparked dramatic cultural shifts. Below are extra lists that dive deeper into this relentless force.

10 Animals That Surprisingly Benefit From Climate Change
10 Archaeological Sites Suffering From Climate Change
10 Conspiracy Theories About Weather Modification
10 Archaeological Discoveries Made Possible By Global Warming

Gordon Gora is a struggling author desperately trying to make it. He is working on several projects, but until he finishes one, he will write for for his bread and butter. You can write him at [email protected].

When we talk about the 10 countries most on the front lines of climate change, the picture is stark and unsettling. In recent years the planet’s warming has turned from a distant warning into a relentless reality, reshaping food production, amplifying natural disasters, and unsettling lives across the globe. Below we dive into the nations that are feeling the heat, the floods, and the droughts most acutely.

Why These 10 Countries Most Vulnerable

Each of the following nations faces a unique cocktail of environmental stressors—ranging from relentless droughts and catastrophic floods to ongoing conflict that hampers adaptation. Their stories illustrate how climate change does not act in isolation; it intertwines with socioeconomic challenges, making recovery an uphill battle.

10 South Sudan

South Sudan sits in the northeastern corner of Africa, sharing borders with Ethiopia, Kenya, Uganda and several other nations. The country’s climate vulnerability has been magnified by a recent civil war that, although formally concluded, still erupts into skirmishes across many regions, compounding the environmental strain.

Today, South Sudan wrestles with a high likelihood of both flooding and drought, already displacing over two million people due to climate‑related pressures. Only 55% of its population enjoys reliable access to safe drinking water, while rainfall has slipped by 10‑20% since the mid‑1970s. With roughly 95% of citizens dependent on natural resources for survival, the nation stands on a precarious precipice.

9 Madagascar

The Republic of Madagascar, one of the planet’s biggest islands, lies about 250 miles off Africa’s southeastern shore. Its geography makes it a hotspot for climate‑driven calamities such as floods, tropical storms, cyclones, and severe droughts, especially during the November‑to‑March cyclone season.

Adding to the turmoil, Madagascar now endures its harshest drought in four decades, striking the southern region and affecting over 1.5 million people. The nation’s reliance on subsistence farming, coupled with soaring water prices and acute food scarcity, has driven total disaster losses beyond $1 billion in recent years.

8 Afghanistan

Afghanistan, despite contributing minimally to global greenhouse gases, finds itself among the world’s most climate‑vulnerable nations, largely because conflict and environmental stressors reinforce each other. The country now confronts a surge of extreme weather events—droughts, storms, floods, landslides, avalanches, and even earthquakes.

About 80% of Afghans depend on agriculture, making even modest climate shifts a severe threat to food security. Droughts have risen across almost every region, affecting 64% of households and half the nation’s population in 2022. Meanwhile, rising temperatures and dwindling glacial melt accelerate water scarcity, with rivers and lakes receding at an ever‑faster pace.

7 Haiti

Haiti, a compact island nation in the Caribbean, bears a disproportionate burden of climate‑related disasters. Its location predisposes it to floods, droughts, and hurricanes, cementing its status as one of the world’s most climate‑vulnerable countries.

A notable challenge for Haiti is its severe deforestation; the scarcity of trees leaves soil exposed, leading to erosion, floods, and landslides during heavy rains. Coupled with a largely subsistence‑based agricultural sector and dwindling access to clean water, the nation’s public‑health and food‑security situations grow increasingly precarious.

6 The Philippines

The Philippines, an archipelago of over 7,000 islands in the western Pacific, dazzles tourists with its natural beauty but also sits in the path of relentless climate threats. On average, the nation endures around 20 typhoons each year, a frequency that has risen sharply in recent times.

The most devastating of these was Super Typhoon Haiyan (Yolanda), which claimed roughly 6,300 lives. Rising sea levels further imperil the country; southeast Asia now hosts about 70% of the 150 million people projected to live in zones that could be submerged by 2050.

5 Democratic Republic Of The Congo

Formerly known as Zaire, the Democratic Republic of the Congo (DRC) ranks among Africa’s largest nations and is increasingly flagged as climate‑high‑risk, especially for its youthful demographic. UNICEF reports that Congolese children sit ninth worldwide in vulnerability to climate and environmental shocks.

Projections suggest that by 2050 temperatures could climb 1‑2.5 °C, sparking heavier rains, prolonged droughts, and a surge in extreme rainfall events. Meanwhile, the nation’s coastal zones may see sea‑level rises of 60‑70 cm by 2080, intensifying erosion and water scarcity.

Approximately 95% of the DRC’s populace relies on staple crops like cassava and maize, both highly susceptible to climate‑induced diseases. Additionally, the country’s hydropower sector faces disruptions from shifting precipitation patterns, threatening both energy and food security.

4 Pakistan

According to the 2021 Global Climate Risk Index, Pakistan lands among the eight most climate‑vulnerable nations worldwide. Over the past two decades, the country has consistently appeared in the top ten for climate risk, suffering thousands of climate‑related deaths and incurring financial losses exceeding $4 billion.

Recent heatwaves have intensified Pakistan’s food‑insecurity crisis, scorching temperatures damaging crop yields and rendering arable land unusable for smallholder farmers. The nation also grapples with recurring extreme weather events, notably the devastating floods of 2010 and 2022.

3 Ethiopia

Located in the Horn of Africa, Ethiopia stands as one of the continent’s most populous nations, yet its exposure to extreme weather—droughts, floods, volcanic activity, and earthquakes—renders it highly climate‑vulnerable, especially given pervasive poverty and a heavy reliance on agriculture, water, tourism, and forestry.

Drought remains Ethiopia’s most damaging climate threat, having intensified in magnitude, frequency, and impact since the 1970s. A severe 2011 drought left millions in dire need of food aid, linked to livestock deaths from pasture and water shortages. Climate change and human activity have expanded drought‑prone and desertified areas, while flash floods and seasonal river floods are on the rise, with a projected 20% increase in extreme high‑rainfall events by century’s end.

2 Somalia

Somalia, an East African nation, faces some of the globe’s harshest climate challenges, with roughly 70% of its people depending on agriculture and pastoralism. The country endures increasingly severe floods and droughts, compounded by environmental degradation from activities such as charcoal production.

Moreover, Somalia is now experiencing its most severe drought in nearly four decades. The lack of national land‑use and disaster‑risk management policies exacerbates the crisis, hitting local settlements hard. Women in rural areas bear a disproportionate burden, lacking decision‑making power and equitable resource access. Despite minimal greenhouse‑gas emissions, Somalia ranks as the world’s second most climate‑vulnerable country.

1 Syria

While many recognize Syria’s decade‑long civil war, fewer are aware of its acute climate vulnerability. The nation has suffered record‑low rainfall in 2021, slashing water flow into critical rivers such as the Euphrates.

These climate shocks have gravely impacted agricultural communities and pastoralists who rely on water and vegetation for their livelihoods. The ongoing conflict has further damaged infrastructure and displaced large swaths of the population, deepening poverty and making essentials like food, water, and shelter increasingly scarce.

Since the dawn of Earth’s long story, the climate has been on a perpetual roller‑coaster, nudged by the sun, shifting continents, thriving ecosystems and even the occasional cosmic cameo of comets or asteroids. Over the past century, humanity’s industrial surge has tipped the scales so dramatically that climate change now occupies the front page of every major news outlet and shapes legislation worldwide. Among the many ways we talk about this planetary crisis, a strange pattern has emerged: the discourse is beginning to echo the language, rituals, and structures of religion.

10 Creepy Reasons Climate Change Mirrors Religion

10 Religious Services & Sacraments

Every faith tradition hosts gatherings of some sort—whether solemn rites, celebratory masses, or reflective meditations. In the classic Christian sense, sacraments are meant to channel divine grace, while at their core they also provide psychological comfort: confession eases guilt, and funerals help mourners navigate loss.

Recently, climate‑focused gatherings have begun to adopt a similar vibe. Iceland’s Prime Minister and Environment Minister presided over a solemn ceremony for the disappearance of the 700‑year‑old Okjökull glacier, gathering a hundred mourners, former Irish President Mary Robinson, and the very geologist who declared the glacier dead in 2014, complete with a death certificate. This “climate funeral” was a striking blend of scientific loss and ritual mourning.

But funerals aren’t the only climate‑related sacrament on the rise. NBC News launched a platform called “Climate Confessions,” inviting people to anonymously admit their personal climate sins—whether it’s over‑using the air‑conditioner, tossing half a lunch, or grilling steak weekly. The site showcases these confessions for public viewing, turning private guilt into a communal, almost liturgical, act.

9 Evangelism

In Catholic terminology, an evangelist is one of the Gospel writers—Matthew, Mark, Luke, or John—while more broadly the word denotes anyone who passionately spreads a message from the pulpit. In the tech world it can even describe a brand champion.

No belief system thrives without charismatic messengers, and the climate movement is no exception. Figures like Al Gore, a host of celebrity advocates, and the teenage firebrand Greta Thunberg have become modern‑day evangelists. Thunberg, often likened to a youthful Joan of Arc, has even been floated as a Nobel Peace Prize contender. Her recent United Nations address was a vivid sermon, warning of suffering, dying ecosystems, and a looming mass extinction, all while condemning endless economic growth narratives.

Her impassioned plea—“How dare you! … You have stolen my dreams and my childhood with your empty words”—resonates like a prophetic sermon, rallying believers and skeptics alike to the climate cause.

8 Tithing

The ancient scripture of 2 Chronicles (31:4‑5) describes how the Israelites offered a tenth of their harvest to the priests, a practice that evolved into what we now recognize as tithing—voluntary contributions, often around ten percent, to support religious leadership.

Modern governments have adopted a secular counterpart: carbon taxes. These levies, now common across the globe, act as compulsory “tithes” for the climate cause. In Canada, for example, the carbon tax adds roughly $0.44 per gallon of gasoline, doubles the price of coal, and hikes natural‑gas costs by about 75 percent, illustrating how fiscal policy mirrors ancient offerings.

7 Martyrdom

Martyrdom traditionally denotes dying for one’s faith, a theme that recurs throughout history. Climate activism has produced its own modern martyrs. In October 2016, Mark Baumer set out to trek across the United States barefoot, aiming to spotlight water scarcity and climate peril.

Baumer chronicled his journey in a vivid diary, quickly gaining a cult following. Tragically, in January 2017, while still on his pilgrimage, he was struck by an SUV and killed. His death has been likened to that of early saints, cementing his status as a climate martyr.

6 Heretics

Heresy describes the obstinate refusal to accept an established doctrine, and in today’s climate debate, those labeled “deniers” often face professional exile. Scientists, university professors, and even journalists have been dismissed for questioning the prevailing climate narrative, mirroring medieval heretics who were ostracized for dissent.

Whether these dissenters are right or wrong is secondary; the pattern of excommunication is strikingly similar to the fate of Galileo, who was placed under house arrest for challenging biblical cosmology.

5 Priesthood / Theologians

Just as priests interpret sacred texts for congregations, the United Nations Intergovernmental Panel on Climate Change (IPCC) synthesizes scientific studies and presents them to the world. The panel convenes regularly—much like ecclesiastical synods—to craft reports that guide national policies and taxation.

The IPCC originated from a 1985 advisory group on greenhouse gases. Over three decades later, its leadership, currently headed by South Korean economist Hoesung Lee, continues to shape global climate strategy, echoing the authority of a modern theological hierarchy.

4 Fatwas

In Islamic law, a fatwa is a legal opinion issued by a qualified scholar, often dictating permissible behavior. The climate movement has adopted a similar approach, issuing “fatwas” that effectively ban certain items—like plastic straws and bags—on environmental grounds.

While these bans are technically voluntary, social pressure and eventual legislation turn them into de‑facto prohibitions, mirroring how religious edicts enforce community standards. As old items disappear, new, distinctive climate‑focused objects emerge, leading us straight into the realm of climate sacramentals.

3 Sacramentals

Sacramentals are man‑made objects that remind believers of their faith—think rosary beads, crucifixes, or prayer beads. In the climate arena, everyday items such as reusable shopping bags, metal straws, and reusable coffee cups serve as modern sacramentals, symbolizing personal commitment to the cause.

These objects, while useful beyond activism, acquire a deeper significance for climate advocates, much like traditional sacramentals do for religious followers. Their presence in daily life keeps the environmental message constantly in view.

2 Feast Days

We all cherish holidays—Christmas, Easter, Halloween—each rooted in ancient rites. Climate activism has carved out its own calendar of celebrations. Earth Day, first observed in 1970, was later co‑opted in 2016 as the day the Paris Agreement was signed, turning a general environmental observance into a climate‑specific milestone.

In 2005, activists launched the Global Day of Action, a day dedicated to protest rather than passive celebration. Scheduled to align with the United Nations Framework Convention on Climate Change (UNFCCC), it aims to pressure policymakers into decisive action.

1 Eschatology

Eschatology studies the ultimate destiny of humanity and the world. Throughout history, prophetic warnings of the end have captivated societies—from the Jehovah’s Witnesses’ shifting dates to the 2012 “Mayan” apocalypse myth.

Today, climate advocates echo that tradition, warning that the planet faces imminent collapse. Politicians have warned that “the world is gonna end in 12 years if we don’t address climate change,” while scientists are said to be “unanimous: we have no more than 12 years to take bold action.” Al Gore’s 2006 documentary “An Inconvenient Truth” also warned of a ten‑year window to avert disaster.

These apocalyptic narratives, whether in sermons or policy speeches, reinforce the sense that climate change is not just a scientific issue but a looming end‑times scenario, reinforcing its religious‑like urgency.