How cold was the ice age? Researchers now know

A team of scientists has nailed down the temperature at the peak of the last ice age, a time known as the Last Glacial Maximum, to about 46 degrees Fahrenheit. Their findings allow climate scientists to better understand the relationship between today’s rising levels of atmospheric carbon dioxide—a major greenhouse gas—and average global temperature. The […]

Genetic ‘memory’ of ancestral environments helps organisms readapt

Organisms carry long-term “memories” of their ancestral homelands that help them adapt to environmental change, according to a new study that involved raising chickens on the Tibetan Plateau and an adjacent lowland site. The study provides new insights into how creatures adapt to changing environments, a topic that’s especially relevant today in the context of […]