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Your Guide To Eco-Friendly Birth Control

So you’re having safe sex. Good for you! But is your contraceptive safe for the environment? Here is some information about the environmental impacts of a few of the most popular non-permanent forms of birth control in the U.S. Note that sterilization is not included because it is permanent (but …

Will She Have Sex With You?

<b>She’s the life of the party</b><p>Of course you’re attracted, who wouldn’t be? But analyze her group of gal pals before moving in, advises Brandy Engler, Ph.D., a Los Angeles sex therapist. If her clique seems closed off—only making eye contact with each other, dancing in a tight cluster—they’re not …

The Queen Will See You Now: How Bees’ Sense Of Smell Might Soon Diagnose Disease

Bees have a nose 100 times more powerful than a human’s. Like dogs, it turns out they can be trained and used in diagnostic tests. A London artist now has a contraption to do just that.<p>Even when a honeybee is a couple of miles away, it can still smell a particular flower or toxin. A bee’s olfactory …

NASA's Tips For Interpreting Satellite Images

Example tip: Farmed vegetation often looks brighter green than natural vegetation<p>Here at <i>Popular Science</i>, we love satellite images. They offer cool views of Earthly phenomena such as plankton blooms and erupting volcanoes. They give important perspective on the impact of natural disasters such as …

Why Do Humans Have a Fear of Insects?

Author Dr. Jeffrey Lockwood tries to answer that question<p>Why do so many people have a fear of insects? Is it ingrained, or a byproduct of modern culture? Jeffrey Lockwood, an insect ecologist and philosopher at the University of Wyoming, tries to answer such questions in his new book: <i>The Infested</i> …

FYI: How Did English Get To Be The International Language Of Science?

Everyone got mad at the Germans.<p>More than 98 percent of all scientific articles published today are in English, but that hasn’t always been the case. “There used to be one language of science in Europe, and it was Latin,” says Michael Gordin, a historian of science at Princeton University who is …

Powerful Portraits of Secluded Cultures on the Brink of Extinction

Before They Pass Away is a powerful documentary series by photographer Jimmy Nelson featuring dozens of cultures around the world whose people live in seclusion and are at risk of fading away. Traveling across five continents, the English photographer manages to embrace the various cultures he has …

Anthropology

Sprintbeemer by Lucky Cat Garage

The inspiration for a bike build can come from the most unlikely of sources. In the case of this most unusual BMW sprint bike, it was a vintage M&H Racemaster drag tire.<p>The tire belonged to the amiable Séb Lorentz of the Lucky Cat Garage, a familiar face on the European custom show circuit. While …

Superbikes

For $10, Convert Your Smartphone into a Microscope with Photo and Video Capabilities

[Update – 10:43AM 10/29/13] We actually built one of these $10 microscope stands. Take a look at the photos we took using it to see how well it works.<p>…

How To Generate Electricity With A Bicycle [Video]

DIY hurricane survival<p>Hurricane Sandy left 7 million people without power. Chris Hackett, a Brooklyn-based artist who converts trash into useful objects, wants to help people prepare for the next power outage by teaching the finer points of homemade generator construction. In just under six …

How Racist Is Online Dating?

A new study says OkCupid users are often willing to respond to messages from potential lovers outside their own race, and once they do, they're more likely to initiate interracial contact going forward.<p>How racist are Americans when it comes to selecting a mate? Though the rate of interracial …

Brains Sweep Themselves Clean Of Toxins During Sleep

While the brain sleeps, it clears out harmful toxins, a process that may reduce the risk of Alzheimer's, researchers say.<p>During sleep, the flow of cerebrospinal fluid in the brain increases dramatically, washing away harmful waste proteins that build up between brain cells during waking hours, a …

What Are Genetically Recoded Organisms?

Researchers have developed a new kind of genetic engineering that may be safer, with the power to make never-before-seen types of protein.<p>On a genetic level, all of life on Earth speaks the same language. We've all got DNA and/or its close cousin, RNA. All of our genetic material is composed of the …

Skull of Homo erectus throws story of human evolution into disarray

A haul of fossils found in Georgia suggests that half a dozen species of early human ancestor were actually all Homo erectus<p>The spectacular fossilised skull of an ancient human ancestor that died nearly two million years ago has forced scientists to rethink the story of early human …

China's Cockroach Farms Are A Glimpse Into Our Protein Future

The environmentally friendly way to farm<p>You've heard the arguments. Insects are cheap to grow, easy on the environment, and high in protein and minerals. In contrast, livestock such as pigs and cows are expensive, produce noxious chemicals such as methane and ammonia, and take up land and grains …

Skull fossil challenges evolutionary history

The discovery of a 1.8-million-year-old skull of a human ancestor buried under a medieval Georgian village offers new evidence that early man was a single species with a vast array of different looks, researchers have said.<p>With a tiny brain about a third the size of a modern human's, protruding …