People who recovered from PTSD changed the way their brains handle intrusive thoughts, a study of survivors of the 2015 Paris terrorist attacks shows.
About 40,000 years ago, giant kangaroos vanished Down Under. Dental analyses suggest a varied diet, meaning climate change was not the main cause.
In some parts of California, fire season is now year-round due to rising heat and little rain. High winds and dry conditions are fueling L.A.’s infernos.