U.S.

Most U.S. dairy cows are born with horns, but most farms remove them. Animal welfare groups say dehorning is cruel. Instead, they want ranchers to breed more hornless cattle into their herds.

The treatments are popular in India and the United States, but some can be contaminated with high levels of lead and other toxic metals. People continue to be harmed.

Key elements include a requirement that would cut the power industry's carbon pollution by 32 percent below 2005 levels in the next 15 years.

Facing three felony charges of securities fraud, Ken Paxton was processed at a county jail and released on bail Monday morning.

It is hoped that the new supercomputer, expected to go online by 2025, would be the first "exascale" machine — some 20 times faster than today's fastest machine, called Tianhe-2 (Milky Way-2).

Republican presidential hopefuls are about to get their biggest test yet as they battle to make it onto the debate stage Thursday and woo voters who are just tuning into the contest.

Zimbabwean wildlife officials say the man killed the lion in April during a hunt that was illegal. This comes a week after the killing of a lion named Cecil sparked a worldwide outcry.

A kid-sized robot that's built around a PVC bucket and sports a friendly face, the hitchBOT couldn't make it out of Philadelphia in one piece.

Members of Congress have written to the secretary of defense asking him to tell black, Puerto Rican and Japanese-American soldiers that they were unjustly chosen for experiments in WWII.