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An asteroid was discovered a few weeks ago that astronomersthink will impact the Earth 18 years from now. The asteroid,known as NT7, has an orbit that’s on a collision course withEarth and if nothing changes, it will hit us on February 1,2019.

From its brightness, astronomers thinks it’s over a milewide, which is large enough to devastate a entire continent,if it strikes land. If it hits the ocean, it would producetidal waves that would engulf coastlines. Thedebris given off by the impact could significantly changeour global weather.
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Elephants may be talking back and forth with their feet,through vibrations they pick up from the ground. StanfordUniversity biologist Caitlin O’Connell-Rodwell, says, “Forpeople who have spent time studying elephants, this is arelief. They finally understand some strange things thatwere happening with elephants and they really are excitedabout it.”

Observations of African elephants in Namibia over 10 yearsleft O’Connell-Rodwell puzzled. It was clear they werecommunicating with each other, but she couldn?t figure outhow. Then she realized they were using their feet.
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Western women could reduce their breast cancer risk bynearly 60% if they breastfed their children longer. Thishelps explain why breast cancer is now a major killer,despite being almost unknown 200 years ago.

Having an average of six children and breastfeeding them fortwo years would reduce the incidence of breast cancer tothird world levels according to the Cancer Research U.K.organization. “Clearly this is not a realistic option forthe modern woman,” says Valerie Beral, of the CancerResearch U.K. Unit in Oxford, who led the research. “Buteven if women in the West were to breastfeed each of theirchildren for an extra six months this could prevent five percent of breast cancers each year.”
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Scientists think we may be in the middle of the sixth massextinction in the history of the Earth. A UN report warnsthat 1,183 (12%) of bird species and 1,130 (nearlyone-fourth) of all mammal species are threatened withextinction.

Mass extinctions have occurred five times so far in the fourbillion year history of life on Earth. These are moments inhistory when, for one reason or another, half or more of allspecies die off within a short period of time. We can spotthese mass extinctions from fossil records.
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