The shrinking supply of Colorado River water is evident at the Hoover Dam on the border of Arizona and Nevada.
AP Photo/Ross D. Franklin
Taking millions of gallons of water permanently out of the Colorado River amid a prolonged drought would surely start an interstate fight.
The porn industry has long placed an emphasis on young girls.
A little-noticed court ruling represents the biggest setback for opponents of child porn in decades.
More than 6 million US citizens can't vote because they've been convicted of a felony. But states are beginning to change their laws. Will it make a difference?
An exam room at the Planned Parenthood South Austin Health Center in Texas.
One in 4 US women receives an abortion sometime in her life. Who are the women who choose to end their pregnancies?
This African woman suffers from an autoimmune disease called vitiligo which causes the loss of skin pigment.
An autoimmune disease called vitiligo causes white spots to appear on the body, in some cases completely erasing an individual's pigmentation. But a new therapy is on the horizon.
The reliability of a new guideline for the management of chronic hepatitis C is questionable, given the financial conflicts of interest documented by its authors.
In the run up to the Global Hepatitis Summit 2018, new guidelines for the management of hepatitis C should come under scrutiny – for financial conflict of interest and quality of evidence.
Ford has doubled down on its best-selling pickup trucks.
AP Photo/Paul Sancya
For 30 years, it’s been the best-selling vehicle in the US.
Despite alarming news, retirees can still rely on their retirement nest eggs.
Social Security will have to dip into its trust fund to pay benefits this year for the first time since 1982. Should we be worried?
One in 7 women suffer depression around pregnancy.
Depression can have a profound impact on mothers and their children. But women often have no idea that they have depression – nor do their medical providers.
Top-down artist depiction of a tiny black hole and a pileup of gas and matter swirling toward the center.
The little-known Rossi X-ray Timing Explorer spacecraft was like a Geiger counter for the universe, listening to black holes and zombie stars.
Rwanda’s Genocide Memorial burial site.
As Rwanda marks the 24th anniversary of the 1994 genocide, much more needs to be done to unite the country.
How do survivors find healing? Chum Mey, a survivor of the Khmer Rouge regime, walks past a portrait of Nuon Chea, a former Khmer Rouge leader.
AP Photo/Heng Sinith
The accounts of survivors of Pol Pot's Khmer Rouge show how they were able to find justice and healing by breaking their silence and speaking on behalf of those who were killed.
Stormy Daniels is the rare ‘porn star’ to find success. She was even briefly a Senate contender in 2009.
AP Photo/Bill Haber
Stephanie Clifford may be a 'porn star,' but her success is hardly typical of the vast majority of performers affected by the seismic changes in the industry.
Evidence from countries that execute people for drug offenses shows no relationship between harsh punishment and rates of drug use.
Just seven countries worldwide regularly execute people for drug crimes, most of them authoritarian regimes. Nothing suggests that this brutal policy actually curbs drug use.
Is it going to stop?
In the wake of a self-driving Uber car killing a pedestrian in Arizona, an ethicist examines the state of autonomous vehicle development.
There are nanometals in your washing machine.
Many socks, towels and other textiles are treated with silver nanoparticles to kill germs and odors. When the silver washes out, it can pollute waterways. Two chemists propose a way to collect it from wastewater.
Research suggests long-term academic gains for children when they attend programs where their preschool teachers hold a bachelor’s degree.
Are preschool teachers with college degrees better at their jobs?
Plutôt que d'observer étoiles ou bactéries sur leurs écrans, les chercheurs pourraient utiliser Twitter pour communiquer et chercher des financements.
Beaucoup de scientifiques sont réfractaires à l'utilisation des réseaux sociaux. Pourtant, Twitter peut s'avérer être un excellent moyen de communiquer et même de trouver des financements.
Gates of the Arctic National Park, Alaska. Plants on the Arctic tundra absorb mercury from the air, then transfer it to soil when they die.
How do mercury emissions from industrialized countries reach the remote Arctic? Recent research shows that plants on the tundra absorb mercury vapor through their leaves, then pass it into soil.
Voodoo doll or an illustration of the Republican tax plan on income inequality?
Supply-side economics is the intellectual backbone of the argument that tax cuts for the wealthy will boost business investment, wages and growth. The evidence suggests otherwise.