Studies suggest that smoking heavily in adolescence may affect brain function in adulthood, but there's a dearth of hard evidence for voters contemplating pot's long-term effects.
A group of inmates in Texas says poorly ventilated, steel and concrete cellblocks bake like ovens. The inmates are suing the state prison system, arguing the heat is killing older and infirm convicts.
The Drug Enforcement Administration is cracking down on a plant that it says is involved in a number of deaths. Advocates say kratom can help treat opioid addiction, which is a far bigger hazard.
In The Trainable Cat, feline behavior specialist Sarah Ellis explains how you can train your kitty to come on command, take medicine and stop waking you up in the middle of the night.
Protesters continue to gather at the site of a proposed oil pipeline despite Friday's announcement that the government would pause construction on federally owned land.
A Wisconsin clinic provides free dental care so that poor rural residents can get their teeth fixed. But in most states people aren't so lucky. Millions of people have no access to dental care.
Berlin has become a vegan mecca, with ice cream shops, restaurants and even butchers catering to a plant-based diet. Now Germany's nutritionists warn that a vegan diet can't provide all a body needs.
The schools in Erie, Pa., have had money trouble for a while. To give his students a better shot, the superintendent wants to send all his high schoolers to the more wealthy, whiter suburban schools.
After Sept. 11, the difficult conversation began about compensating survivors and assessing the long-term value of a lost human life. It fell to Special Master Kenneth Feinberg to administer it.
Veteran AP reporter Kathy Gannon discusses her experience covering the war in Afghanistan from the beginning, and describes what has changed over the last 15 years.