In an op-ed for CNN, the president wrote that he hopes to one day look at the night sky with his grandchildren and tell them that humans are living on Mars.
The humble writing implement has its roots in exploding stars, the French Revolution, the crown jewels of England and Walden pond.
The object known for now as 2014 QZ224 is only about 330 miles across and takes 1,100 years to orbit the sun. But one of the most interesting things about it is the way researchers found it.
Paternity leave can make a big difference in a dad's long-term engagement with the child, doctors find. Paid family leave also fosters breastfeeding and reduces the incidence of maternal depression.
Since California passed a statewide paid parental leave law, New Jersey, Rhode Island and New York have followed suit. Some think the state laws could be a model for a national paid leave policy.
For the past decade, no major hurricanes have come ashore along the East Coast or Gulf of Mexico. Hurricane Matthew is ending that lucky streak.
The giant poultry producer says that it is now raising all of its chickens without routine antibiotics. Only those flocks that get sick, about 5 percent of all birds, will be treated.
The impulsivity and risk-taking that are common among teenagers may be a side effect of having a brain tuned to learn a lot of new stuff fast, researchers say. So it could be good in the long run.
Journalist Bryan Christy estimates the wholesale market for rhino horn is a quarter of a billion dollars. Customers think the horn has healing powers. Criminal syndicates take the money.
"Medicinal and possibly spiritual or at least ritualistic Cannabis use was a widespread custom among Central Eurasian peoples during the first millennium before the Christian era," the scientists say.
But they'll have to wait a while. The portion of the $394 million Congress allocated to help pregnant women find out more quickly if they have Zika isn't expected to get to strained labs until 2017.
Hurricane Matthew drowned and battered the island nation on Tuesday. At least 23 people died and, more than 48 hours after the storm made landfall, many of the worst hit areas are still inaccessible.
New research reveals that the amount of methane from oil and gas operations is much larger than previously thought. But the recent uptick in methane emissions seems to be from agriculture.
Implants and intrauterine devices are endorsed by pediatricians, OB-GYNs and health officials as a way to help women space their pregnancies and reduce the risk of delivering a premature baby.
An analysis of global demographics indicates the maximum human life span may have peaked at around 115 years. That's despite medical advances and the occasional person who lives a few years longer.
Hurricane Matthew killed at least 11 people in Haiti before it barreled north toward the Bahamas. Florida, Georgia and the Carolinas all declared states of emergency as they prepared for the storm.
The 2016 Nobel for chemistry goes to Jean-Pierre Sauvage, Sir J. Fraser Stoddart and Bernard L. Feringa. The chemists are French, Scottish and Dutch, respectively.
Jean-Pierre Sauvage, Sir J. Fraser Stoddart and Bernard L. Feringa share the 2016 Nobel Prize for Chemistry. By designing a tiny chain, axle and rotor blade, they helped develop molecular machines.
Nearly 200 nations agreed last December to the most ambitious deal to slow climate change ever. It looks very likely that the requisite number of countries will actually ratify the deal this week to make it official. That will set in motion the difficult process of making sure both rich and poor countries deliver on their promises to cut emissions of greenhouse gases.
The European vote to ratify it effectively ends debate over the climate deal. Once the EU turns over paperwork to the U.N. later this week, the plan will officially come into force.