Latest Chris Field Stories
According to a study of prehistoric climate change, ancient hunters who stalked the world's last woolly mammoths likely helped warm the Earth's far northern latitudes thousands of years before humans started to burn fossil fuels.
Even before the dawn of agriculture, people may have caused the planet to warm up, a new study suggests.
According to a top climate scientist, warnings about global warming have not been severe enough.
- A transitional zone between two communities containing the characteristic species of each.