Two teams of researchers are studying tailed spiders captured and preserved about 100 million years ago, which could provide evidence of the species' evolution.
Computers use artificial intelligence to do everything from drive cars to pick music we like. But what exactly is artificial intelligence? How does it work? What are its limits?
Equating individualism with selfishness may be a mistake: Some of the world's wealthiest and most individualistic countries are some of the most altruistic, says 13.7 guest commentator Abigail Marsh.
Scientists are keen to figure out how diet influences aging, including brain health. A 5-year study of healthy seniors found those who ate a serving or two of daily greens had less cognitive decline.
The Trump administration has reversed a key policy for protecting migrating birds. Officials say a century old federal law is outdated, and poses a burden for utilities and energy companies.
The White House will pull nominee Kathleen Hartnett White to lead the Council on Environmental Quality. White has drawn criticism for her comments on climate change.
In September, two Category 5 hurricanes devastated the region. Now, its hospitals can no longer provide major surgery, cancer treatment or specialized care, forcing daily staff cuts and revenue loss.