The Voyager 1 spacecraft launched in 1977 on a mission to Jupiter and Saturn. It kept on going. Today it's billions of miles from Earth, and scientists have been predicting it will soon leave the solar system.
Originally published on Tue August 20, 2013 11:31 am
Whether or not you'll someday get cancer or any disease can feel like a roll of hundreds of dice. Calculating the odds -- and knowing what they mean -- is tricky.
Credit Katie Harbath / Flickr
Online risk calculators are all the rage these days among public health groups trying to get us to change our unhealthful ways. The World Health Organization developed an online tool that lets you estimate your personal risk of cracking a hip in the next 10 years, for example. You just plug in data about yourself, your lifestyle, and your family medical history.
A meteor trail is seen above a residential apartment block in the Urals city of Chelyabinsk on Feb. 15.
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The bus-sized meteor that slammed into Russia in February, causing a massive shock-wave and injuring hundreds of people, sent a plume of dust into the stratosphere that circled the globe in just four days and lingered for months, NASA says.
The Feb. 15 meteor at Chelyabinsk near Russia's southern border with Kazakhstan measured 60 feet across and weighed 12,000 tons. It detonated 15 miles above the city.
Dolphins are washing ashore in alarming numbers in the Mid-Atlantic states this summer. More than 160 deaths of dolphins have been reported since early July and that's the worst fate in 26 years. Response teams from New York to Virginia are trying to determine just what's killing all these dolphins. Charlie Potter is working with one of those teams at the Virginia Aquarium and Marine Science Center.
Ancient North Americans gouged elaborate rock art into a heap of big boulders northeast of Reno, Nev., more than 10,000 years ago and perhaps 15,000 years ago. That makes the carvings the oldest known petroglyphs on the continent, according to a paper published in the Journal of Archaeological Science.
Performance artist Marina Abramovic's piece Measuring the Magic of Mutual Gaze is both art installation and science experiment, in which volunteers sit facing one another while having their brain waves measured. Abramovic discusses these arts and science experiments with neuroscientist Christof Koch, an expert in consciousness.
Across the Southwest, cities are banning water-thirsty front lawns. Cado Daily of the University of Arizona's Water Wise Program views that as an opportunity to plant a "rainscape" — a yard with drought-friendly native plants that she says can look as lush as a lawn, and lure wildlife back, too.
Ten years ago this week, a massive electrical blackout struck the northeastern US and parts of Canada, affecting some 55 million people. IEEE Spectrum journalist Bill Sweet describes the causes of the outage and how the electrical grid has changed since the 2003 failure.