1816 was a year without a summer — literally one of the darkest and deadliest points in human history.

The global climatic anomaly was triggered by the eruption of Mount Tambora in Indonesia in 1815. This massive eruption expelled enough volcanic material to form an aerosol cloud that blocked sunlight, cooling the planet by 2–7 F.

Crops failed across Europe and North America, grain and oat prices soared, and torrential rains destroyed harvests in Ireland.

In the eastern U.S., frost in May and snow in June blanketed states like New York, Vermont, and Maine. Even Virginia saw frost in late August, and rivers remained frozen in Pennsylvania well into July. The Lincoln family, living at Knob Creek Farm in Kentucky, would have experienced the extreme cold, enduring crop failures and facing a harsh, hungry winter.

Meanwhile, cholera outbreaks devastated populations in India. The eruption's ash and environmental changes, such as disrupted monsoon seasons, contributed to the spread of cholera.

Millions died.

This catastrophic event serves as a chilling precursor to today’s climate challenges. Unlike the temporary cooling of 1816, modern climate change is human-driven — and permanent.

By 2050, global temperatures are projected to rise by 4 degrees Fahrenheit, bringing more severe storms, droughts, and other climate disasters. The Year Without Summer offers a stark warning: even small shifts in global temperature can upend lives and ecosystems.