Forget 18. Research shows that the human brain does not fully mature until much later.

The rare dual-sex butterfly astounded curators at the Natural History Museum in London.

For a big selection of eco-lingerie, MNN's lifestyle blogger recommends FaeriesDance.com — which stocks many hard-to-find European eco-fashion brands.

Having sex with an ex seems to be a fairly typical part of the breakup process for young adults, a new study shows.

Guys may now have another reason to get off the couch: Watching TV has been linked to lower sperm counts.

Treating the country's 110 million STDs comes with a price tag of $16.7 billion a year.

We're all looking for happiness, which is why these late-in-life courtships are so inspiring.

Here are the key facts about the cases and what's behind them.

Research suggests that long-distance relationships encourage more communication and that couples try harder.

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

Study found that men who ejaculated more than 21 times a month were significantly less likely to develop prostate cancer.

Researchers discover several new species of sharks that can walk along shallow reefs on their fins.

Video: MSNBC's Dylan Ratigan talks with T. Boone Pickens, CEO of BP Capital Management, and Erich Pica of the group Friends of the Earth to discuss whether Pres

I know many people get to look forward to tax refunds this year, but as a freelance writer, I usually owe taxes in April.

Planet 100 investigates the 5 worst oil spills on record and how the Gulf oil spill compares.

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

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.'

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

Oilman-turned-solar entrepreneur Jeremy Leggett says there's only one shot to plug the well, and getting it wrong comes with a heavy price.

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

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.

The MyPlate icon is starting to pop on food packaging. What are the USDA’s rules for companies that want to use it, and does its appearance on a package imply

The agency bows to pressure from the livestock industry to backtrack on urging people to reduce their consumption of meat.

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

A pilot project in Ithaca, N.Y. will rent space in a community freezer for people to store bulk meat purchases.

This unknown American hero led the development of one of the most significant technological innovations of the 20th century.

A GMO apple won't brown when exposed to oxygen, but apple growers aren't thrilled.

A new report has some sobering statistics about how much food is wasted on the retail and consumer ends of the food chain.

In its Week in Review video, a USDA rep says it’s OK to eat that dry pasta several months past its sell-by date.

The USDA is asking makers of meat, dairy and egg products to stop using "sell by" and "use by" dates and adopt a universal "best if used by" label.

On Aug. 8, the Greenland ice sheet shattered a seasonal record, with more cumulative melting since record-keeping began more than three decades ago, new researc

This summer the North Carolina Senate passed a bill banning researchers from reporting predicted increases in the rate of sea level rise. But the ocean, unbound

Scientists say the consequences of sea-level rise could be 'horrible.'

The world's best beach resorts may disappear despite efforts to protect them against sea level rise

A new study shows that coral reef-building is more complex than Darwin thought.

NASA's new map combined radar, sound waves and electromagnetic instruments to peer beneath Antarctica's ice.

A new study shows that 20 percent of UNESCO World Heritage Sites are at risk, bringing to light the cultural implications of climate change.

This winter, the Arctic ice cap expanded to a total of 5.76 million square miles — one of the lowest areas on record since 1979.

If a small chunk of ice currently plugging the edge of an ice sheet in Antarctica were to melt, it could release massive amounts of ice into the ocean.

The catastrophic collapse of the massive West Antarctic Ice Sheet is underway.

These are just a sample of the things we could lose if temperatures rise 5.4 degrees Fahrenheit over the next 200 years.

Not only can coral reefs buffer humans from disasters, but protecting them is 15 times cheaper than building sea walls.

A report from the Union of Concerned Scientists shows how many coastal cities are vulnerable to chronic flooding — and how many will be underwater.

According to World Bank data, many countries are losing a sizable percentage of land mass due to various factors, including sea level rise and severe weather.

Stone Age villages on the Orkney Islands are older than Stonehenge, but archaeologists fear that they won't be around for much longer.

Actress names new addition Bear Blu Jarecki. Alicia Silverstone has become the latest mother in the current Hollywood baby boom, giving birth to a baby boy on M

'Inception' star and self-described hippie at heart names her first child Marcel.

Actress says that her heart has tripled in size. The great green Hollywood baby boom of 2011 has come to an end — with celebrities like Natalie Portman, Alici