Noting a sharp rise in colorectal cancer among younger people, the American Cancer Society now suggests that healthy adults get their first screening five years earlier — at age 45.
Methane is a powerful greenhouse gas and livestock account for a lot of the gas produced in agriculture. In Kenya, climate scientists are experimenting with different types of feed to reduce the amount cows burp.
This is a key part of Canada's effort to boost oil exports to Asian markets — but the plan has been protested by indigenous groups and environmental activists.
This long-legged canid is in trouble. Its habitat in the Brazilian Savannah is being destroyed. So Smithsonian scientists are racing to breed a healthy backup population.
The researchers used a technology known as LiDAR to map the city of Jerash. It's helping them understand its past, as a growing modern city encroaches on the well-preserved ancient site.
A new Harvard study suggests that the death toll in Puerto Rico from last year's hurricane is many times higher than originally believed — closer to 5,000 than the official count of 64.
The first named storm this season is expected to bring heavy rains and flash flooding. Florida Gov. Rick Scott — and Alabama Gov. Kay Ivey later on Saturday — sounded alarm bells.