Most antibiotics can't tell the difference between good and bad bacteria. That means medicines can kill helpful bacteria in your gut while they're obliterating the ones making you sick.
A refrigerator-sized machine could someday make lifesaving drugs on site when outbreaks occur or where medicine is in short supply, like on the battlefield.
Researchers discovered ancient "beer-making tool kits" in underground rooms built between 3400 and 2900 B.C. Analyses of funnels, pots and jugs show the brewers were using pretty advanced techniques.
Retired economics professor Alexander Van der Bellen edged out anti-immigrant populist candidate Norbert Hofer by just more than 31,000 votes — 0.6 percent of the vote.
German chemical company Bayer makes a strong offer to buy the giant U.S. agricultural firm.
Western states like Colorado are balancing competing demands for waterways. When recreation, agriculture and civic interests find themselves at odds, how can water resources be divided fairly?
It has been nearly 30 years since the high court set new rules to counter race discrimination in the seating of juries. But in some jurisdictions, the propensity to bar black jurors has persisted.
Officer Edward Nero had faced multiple misdemeanors in connection with the arrest and subsequent death of Gray in April 2015.
Good weather has helped hundreds of people summit Mount Everest since May 11. But since Friday, at least three people died in three days, dashing hopes for a safe season after two years of tragedy.
The Islamic State has claimed responsibility for bombings in Tartus and Jableh, strongholds of Bashar Assad's regime.
During a visit to Hanoi, President Obama announced an end to the five-decades-long ban on selling weapons to Vietnam.
Holding torturers to account requires evidence, the kind that doctors are learning to compile from countries at war, like Syria. But there are many challenges.
Her positions on issues from trade to same-sex marriage have changed. Critics say it's often because of political expediency, while supporters insist she learns and adapts to new circumstances.
Long-lasting hormone contraceptives are now the most recommended form of birth control for young women. And many women say the fact that they can reduce or eliminate periods is a big plus.
The medication is the only one available to prevent an infected pregnant woman from passing the disease to a fetus. Pfizer says the shortage should be over in July.
At a news conference in Hanoi, Obama said the move was intended a step toward normalizing relations with the former war enemy and to eliminate a "lingering vestige of the Cold War."
We know that climate change will make water scarcer. But it could also have big economic impacts, Richard Damania of the World Bank says.
Mullah Akhtar Mansour was a divisive figure within the Taliban, and the Afghan government saw him as an obstacle to peace.
"The methods by which they guide public opinion are very sophisticated — they're way more sophisticated than anybody realized," Harvard professor Gary King says.