The white “bathtub ring” around Arizona’s Lake Mead (shown on May 31, 2018), which indicates falling water levels, is about 140 feet high.
AP Photo/Ross D. Franklin
Western states adopted a 7-year plan in May 2019 to manage low water levels in the Colorado River. Now they need to look farther ahead and accept that there will be less water far into the future.
Pollution in Shandong province, source of much of the ozone-depleting gas.
Wu Hong / EPA
Global CFC-11 levels were rising and no one knew why. Scientists turned detective to pinpoint the source.
Diaspora remittances support men and women trying to make a living.
African states may have an alternative funding source they could harness during times of crisis: diaspora investment.
Ugandan President Yoweri Museveni has banned sports betting and a variety of other gambling activities.
There's a strong case to ban gambling as it's rapidly becoming a public health concern in sub-Saharan Africa.
Thurman taught King Jr. that spiritual cultivation was necessary to take on the intense work of social activism.
AP File Photo
Thurman was 30 years older than King: the same age, in fact, as King's father. Among his most significant contributions was bringing the ideas of nonviolence to the civil rights movement.
The auditorium at University of Göttingen today.
Anti-Semitism brought down one of the world's greatest centers for mathematical research.
About nine out of ten Somalis above the age of 16 own a phone.
Mobile money transfers have become the norm in Somalia. Transactions total as much as $2.7bn a month.
A Mobius strip.
The inventor of the brain-teasing Möbius strip died 150 years ago, but his creation continues to spawn new ideas in mathematics.
Firefighters hose down flames from an advancing wildfire July 28, 2018, in Redding, Calif.
AP Photo/Marcio Jose Sanchez
Wildland firefighting has always been a risky job, but development in fire-prone areas is making it more dangerous by putting forest firefighters in situations they are not equipped or trained for.
Trump supporter holds banner against Central American-based Mara Salvatrucha (MS-13).
How city and state governments identify and keep records of suspected gang members can be problematic. Good data are essential to addressing violent crime across the US.
Men want to have a say in conversations about contraception – but they're worried about imposing on women's autonomy.
Agnesi was the first woman to write a mathematics textbook.
May 16 marks the 300th anniversary of the first woman to write a mathematics textbook.
Good for you, bad for the air?
New research is spotlighting personal care products, such as shampoos and skin lotions, as a significant source of chemicals that contribute to urban air pollution.
If everyone else sticks with salad, maybe you will too.
Everybody wants more self-control, but it's proven difficult to beef up through training. New research suggests that what your social group does might be key to enhancing your own self-control skills.
Scientists on Arctic sea ice in the Chukchi Sea, surrounded by melt ponds, July 4, 2010.
Climate change is transforming the Arctic, with impacts on the rest of the planet. A geographer explains why he once doubted that human actions were causing such shifts, and what changed his mind.
Young people in Africa are getting addicted to online betting through their mobile phones.
Mobile money transfers have been a great asset. But the rise of online betting could threaten its contribution.
Dr. Martin Luther King Jr. addresses marchers during his ‘I Have a Dream’ speech at the Lincoln Memorial in Washington.
A scholar argues how MLK's ideas and thoughts remain underappreciated in wider public consciousness.
Fourier’s name is inscribed on the Eiffel Tower.
Fourier's discoveries can still be felt in modern-day radiology, climate science and physics.
Exercise is recommended as an effective non-opioid strategy for non-cancer pain such as fibromyalgia and chronic low back pain. Yet most adults living with chronic pain do not exercise. Or they exercise very little.
Research shows that exercise offers promise -- as an alternative to prescription opioids -- for relieving chronic pain.
‘Fifty Shades’ author E.L. James, shown signing autographs, has earned a fortune from her romance novels.
Few of them are getting rich off their books but the genre is making them more money than it used to.