A nuclear winter is a theoretical concept, but if the climate scenario expected to follow a large-scale nuclear war, in which smoke and soot from firestorms block sunlight, came to fruition, global temperatures would sharply drop, extinguishing most agriculture. A nuclear winter could last for more than a decade, potentially leading to widespread famine for those who survive the devastation of the bomb blasts. Now, a team led by researchers at Penn State have modeled precisely how various nuclear winter scenarios could impact global production of corn — the most widely planted grain crop in the world. They also recommended preparing “agricultural resilience kits” with seeds for faster-growing varieties better adapted to colder temperatures that could potentially help offset the impact of nuclear winter, as well as natural disasters like volcanic eruptions. 

An analysis of data collected over 20 years in the upper stretch of the river shows a 50% loss in economic gains from fishing. Native fish have become smaller and smaller. Conversely, invasive species, which have a lower market value, are becoming more abundant. The phenomenon has been accompanied by a loss of vegetation cover on the riverbanks.

Interactive tool based on analysis of 2.8 billion DNA sequences guides conservation and restoration decisions