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Is Marijuana Really a Gateway Drug?

This article originally appeared on Chris Christie recently said that marijuana is a “gateway drug” while arguing for enforcement of its federal status as an illegal substance.

Why Astronomers Are Riveted By the Search for Nothing

Astronomers have found evidence of a giant void that could be the largest known structure in the universe.

The Mystery of Breast Cancer's Cause

For most of the common cancers, a major cause has been identified: smoking causes 90% of lung cancer worldwide, hepatitis viruses cause most liver cancer, H pylori bacteria causes stomach cancer, human papillomavirus causes almost all cases of cervical cancer, colon cancer is largely explained by physical activity, diet and family history.

Could Small Amounts of Radiation Be Good For You? It's Complicated.

Exposure to high levels of ionizing radiation is extremely bad for human health. Witness the effects of acute radiation sickness suffered by early scientists studying radioactive elements, or by survivors of atomic bomb blasts.

Real-Life Vampires Exist, and Researchers Are Studying Them

Vampires walk among us. But these people aren’t the stuff of nightmares – far from it actually. Just sit down for a drink with one of them and ask for yourself.

We Get Infected By Other People's Emotions – And That's a Good Thing

One day in October 2010, at a school in the Gaibandha district of northwest Bangladesh, a pupil noticed that the label on a packet of crackers she was eating had darkened.

Six Things Facebook (Thinks It) Knows About Your Love Life

Facebook is watching you, collecting data on your every interaction and feeding it to their data scientists, who are hungry for correlations.

Health Care for Sea Turtles Just Got a Shot in the Flipper

Nearly all species of sea turtles are globally endangered, plagued by habitat loss, hunting and illegal trade.

Humanity's First Spacewalk, 50 Years Ago Today, Nearly Ended in Disaster

It is 50 years since humans first encountered space – not Sputnik’s first orbit, nor Yuri Gagarin’s first spaceflight, but the first time a crew member stepped out from their spacecraft’s relative protection and immersed themselves in the cold, hostile emptiness of the vacuum.

Archaeologists See and Smell the Past With Augmented Reality

Try to picture a time machine. You probably envisioned a tricked-out DeLorean or, perhaps, a blue, spinning phone booth, right?

Warm Oceans on Saturn's Moon Enceladus Could Harbor Life

The Cassini mission that has investigated Saturn since 2004 has revealed much about the giant planet and its many moons.

Step Aside, Rockets – Ion Engines Are the Future of Space Travel

The NASA spacecraft Dawn has spent more than seven years traveling across the solar system to intercept the asteroid Vesta and the dwarf planet Ceres.

With Gene Therapy We Could Direct Our Own Evolution

Human genetic engineering is not new; it has been going on for a long, long time — naturally. Ancient viruses are really good at inserting themselves and modifying human gene code.

Women Hurt More Than Men, Due to Both Biology and Bias

You might have heard that men are wimps when it comes to pain. It can make for lighthearted argument, but in fact it’s not true.

Six Fish That Are Smarter Than We Give Them Credit For

Name a smart animal. Perhaps dogs, or dolphins, or chimpanzees came to mind. But why not goldfish, salmon, or moray eels?

The 'Second Moon' You Didn't Know Earth Had

We all know and love the moon. We’re so assured that we only have one that we don’t even give it a specific name.

Google's Artificial Intelligence Masters Classic Atari Video Games

Think you’re good at classic arcade games such as Space Invaders, Breakout and Pong? Think again. In a groundbreaking paper published yesterday in Nature, a team of researchers led by DeepMind co-founder Demis Hassabis reported developing a deep neural network that was able to learn to play such games at an expert level.

Pluto a Planet Again? It May Happen This Year

Ceres is the largest object in the asteroid belt, and NASA’s Dawn spacecraft will arrive there on March 6.

Eye Tracking Is Coming Soon to a Computer Near You

  Eye tracking devices sound a lot more like expensive pieces of scientific research equipment than joysticks – yet if the latest announcements about the latest Assassin’s Creed game are anything to go by, eye tracking will become a commonplace feature of how we interact with computers, and particularly games.

Mars One Finalist: "I Could Sow the Seeds of a New Civilization"

This article was originally published on The Conversation. I have always been in awe of the night sky, trying to comprehend the vastness of space and the countless wonders it contains.