Feeling happy? Go ahead and smile — but know that you may be telling others more about yourself than you think.

Keeping sperm from being ejaculated may provide the key to creating a birth control drug for men.

The popularity of weird beards and mustaches among young men living in Brooklyn, N.Y., may be more than just a hipster fad.

Certain female spiders are infamous for eating their partners after sex, but some actually pounce on suitors, fangs first, before mating.

Early data suggest the U.S. teen birth rate hit a historic low in 2013, according to a new report from the CDC.

Though the study's assumption of what "better" sex means is pretty specific.

Male chimpanzees that wage a campaign of sustained aggression against females sire more offspring than their less violent counterparts.

Picking a partner while on the Pill might have lasting ramifications on marital satisfaction, new research finds.

Women's cheeks get redder when they are the most fertile, but this color change is so subtle that it is undetectable by the human eye.

Rise of the robosexuals: What will it mean for our human relationships?

From the researcher who discovered peacock spiders, a new Australian spider species engages in a complex game to determine if a potential mate is a virgin.

New Zealand's budget will make well-being and equality priorities over the economy.

The latest black hole discovery opens a whole new universe of not-so-big black holes.

A binary star system that got too close to our resident supermassive black hole paid the ultimate price.

A giant whale swam beneath a group of California surfers and it was captured on drone video.

Bei Bei the panda is leaving the Smithsonian Zoo in Washington, D.C., and heading to China after 4 years.

A Utah bobcat named Mr. Murderbritches was captured in 2018 after he was caught eating a farmer's chickens.

Video captured by salmon farmers shows a bald eagle grabbed by an octopus — and then the farmers stepped in.

A giant spoon worm was caught on video as it burrows beneath the sea.

A compilation of some of the most disturbing factoids about BP and the federal government's response to the catastrophe.

Eco-publisher giving away copies of Riki Ott's book on the Exxon Valdez spill, <i>Not One Drop</i>, in exchange for donations to help in the Gulf coast relief e

Louisiana Gov. Jindal puts up Flickr album of gruesome oil creeping into Louisiana wetlands.

Something seems fishy ... when asked about poor response to the disaster, the head of the Louisiana Coast Guard said: 'I'm just slow and dumb.'

Video: The celebrity talks about his experience in the industry and how to move forward.

While the the big NGOs appear to be asleep at the wheel, thousands of Americans will gather on June 26 to make a bold statement to Big Oil execs: 'Stay off our

BP is coming under criticism for buying 'gulf oil spill' search advertising on Google. Will the company's attempt to redirect online traffic backfire?

Why are government officials still blocking journalists from documenting the Gulf oil spill? What are they hiding, and why is Obama letting it happen?

The oil spill drives home the consequences of our addiction.

BP has been attacked from all sides, but it is the artist community that has provided its most thorough evisceration.

Alaskan journalist Charles Wohlforth, author of 'The Fate of Nature,' tells MSNBC about the oil spill's likely long-term effects and what could exacerbate them.

100,000 barrels per day and a tilting wellhead presage doomsday scenario, according to an industry insider.

The answer, it turns out, is simple: BP didn't want workers to be disturbed by "false alarms."

Greenpeace ship blocked en route to protesting new oil find off the coast of Greenland.

A mere change of governments will not make Arab countries’ economic problems go away. Indeed, the converging effects of population growth, climate change, and

The Republican presidential candidate from Minnesota thinks she has the magic touch for lowering prices at the pump.

There's a lot to sort out in Libya's post-Gadhafi era, but there should be good news for the American consumer.

A new proposal would expand offshore drilling in U.S. waters, but it's drawing fire from supporters as well as critics of the oil and gas industry.

A '100% self-supporting housing solution for the post-oil world,' the Oil Silo Home concept makes use of the thousands of oil storage units that will inevitably

By 2030, America could surpass Saudi Arabia in terms of crude output. That's great for energy independence, but it's not all good news.

It's just not possible to feed meat to the 7 billion (and growing) people on planet Earth.

Kermit pops into ‘Saturday Night Live’ to discuss the school lunch standards.

The fast-food company denies that pressure from chef Jamie Oliver had anything to do with its decision.

Sensational headlines and varying reports about a North Carolina school lunch incident would have us think so.

Food news and items of interest from around the Web for your weekend reading.

Exotic beetles are killing America's ash trees, a popular source of wood for baseball bats. And as these verdant invaders spread into the Northeast, their grow

America does not grow enough fruits and vegetables to satisfy USDA recommendations for all citizens. This infograhic makes the argument easy to understand.

Looks like the USDA forgot its 'A' stands for all agriculture and not just beef this week, and Monsanto might have more power than the federal court system. It'

In a recently released video, the first lady talks up the healthy new choices that kids will see in their school lunches this year

The USDA wants to set nutritional standards for snacks sold in vending machines, "a la carte" lunch lines and school stores.

The outgoing USDA deputy secretary receives a heartfelt letter signed by Alice Waters, Marisa Tomei, Robyn O’Brien and many more.