Two Chinese Private Space Companies Will Launch into Orbit This Year

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Chinese Space Launch Two Chinese private space companies are on the verge of attempting their first orbital launches, according to the space industry newssite SpaceNews. Companies OneSpace and iSpace aim to successfully complete orbital launches within the first half of 2019. The success of these launches would solidify the progress made by China's growing private space sector. Beijing-based OneSpace plans to launch their 62-foot-tall (19 meters) OS-M rocket as soon as late ...read more

Why Climate Change is Bringing the Polar Vortex South

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A record-breaking cold wave is sending literal shivers down the spines of millions of Americans. Temperatures across the upper Midwest are forecast to fall an astonishing 50 degrees Fahrenheit (28 degrees Celsius) below normal this week – as low as 35 degrees below zero. Pile a gusty wind on top, and the air will feel like -60 F. This cold is nothing to sneeze at. The National Weather Service is warning of brutal, life-threatening conditions. Frostbite will strike fast on any exposed skin ...read more

The Soviets’ Lunar Program in 1969

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Last week, I did the first in a series of interviews about Apollo 11 with CBC's Quirks & Quarks. As a Canadian, this was a big deal for me! I grew up listening to this show every Saturday at 12:06pm with my Dad, usually in the car on the way home from gymnastics. Not only that, it's an award-winning nationally syndicated show. So to be on the show as an expert was absolutely incredible! You can listen to the whole episode here; I come in at about the 26-minute mark. Of course, the seg ...read more

Why Did Darker and Lighter Human Skin Colors Evolve?

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Human skin color reflects an evolutionary balancing act tens of thousands of years in the making. There’s a convincing explanation for why human skin tone varies as a global gradient, with the darkest populations around the equator and the lightest ones near the poles. Put simply, dark complexion is advantageous in sunnier places, whereas fair skin fairs better in regions with less sun. That may seem obvious, considering the suffering that ensues when pale folks visit the beach. But actua ...read more

How a Massive Tree-Planting Campaign Eased Stifling Summer Heat in New York City

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Many cities, in recent years, have initiated tree planting campaigns to offset carbon dioxide emissions and improve urban microclimates. In 2007, New York City launched MillionTrees NYC, a program designed to plant 1 million new trees along streets, in parks and on private and public properties by 2017. They hit their goal two years ahead of time. These programs are popular for a reason: Not only do trees improve the city’s appearance, but they also mitigate the urban heat island effec ...read more

At San Diego’s Frozen Zoo, a Chance for Animal Immortality

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The last male northern white rhinoceros — his name was Sudan — died in March, leaving only two members of the subspecies behind: his daughter and granddaughter. In the past, those stark facts would have spelled the end. But researchers at the San Diego Zoo’s Institute for Conservation Research — home to a frosty menagerie known as the Frozen Zoo — are working to give northern white rhinos a second chance. Since 1975, the institute has been collecting tissues from c ...read more

Maybe You Really Can Use Black Holes to Travel the Universe

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One of the most cherished science fiction scenarios is using a black hole as a portal to another dimension or time or universe. That fantasy may be closer to reality than previously imagined. Black holes are perhaps the most mysterious objects in the universe. They are the consequence of gravity crushing a dying star without limit, leading to the formation of a true singularity – which happens when an entire star gets compressed down to a single point yielding an object with infinite dens ...read more

Could Past Global Climate Have Been Changed by an Eruption … in Scotland?

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We don't tend to think of the British Isles as a land of volcanoes. However, over geologic timescales, things can be very different. ~50-60 million years ago, the North Atlantic Ocean was opening and the area around the modern North Sea was rife with volcanic activity. Much of these eruptions were lava flows, producing flood basalt provinces similar to the Columbia River Basalt -- but now mainly under the waters and ice of the North Atlantic and Greenland. Yet, over in what is called the Bri ...read more

A Common Gum Infection Bacteria May Also be Causing Alzheimer’s

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P. gingivalis can destroy gums and cause tooth loss. In infected mice, it also led to Alzheimer’s hallmark amyloid beta plaque.(Credit: Cortexyme, Inc.) In a new study out Wednesday, scientists reveal yet another reason to keep up on dental hygiene. Bacteria that cause a common yet largely preventable gum infection may also play a role in Alzheimer’s disease. The discovery also offers hope for a treatment that could slow neurodegeneration. “There were many clues in the [featu ...read more

Heart Disease Risk Begins Before Birth. Vitamin C Could Help

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Not getting enough oxygen to tissues during pregnancy can lead to offspring with high blood pressure as adults. Vitamin C may counteract that. (Credit: Rattiya Thongdumhyu/shutterstock) High blood pressure in adulthood may extend all the way back to before birth, according to new research in sheep. Scientists found not getting enough oxygen to tissues during pregnancy led to offspring with high blood pressure as adults. However, giving a high-dose of vitamin C to pregnant e ...read more

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