The chicken pesto pasta on your plate is more than just tasty fuel to keep you going. The dish has carbohydrates, fats and proteins to be sure, but it also contains other nutrients and chemicals that send subtle cues and instructions to your cells.
Yesterday, a mysterious group called the Inspiration Mars Foundation announced vague plans for a “historic journey to Mars and back in 501 days” scheduled for 2018.
When a 17-meter asteroid barreled into Earth’s atmosphere over central Russia on February 15, releasing a powerful shock wave that injured more than 1,000 people, many observers wondered how such a momentous event could arrive unheralded.
The cosmos is full of surprises—not a week goes by without some group of astronomers announcing a perplexing new discovery that upends theory or expectation.
BOSTON—Rarer than hen’s teeth is a bill in Congress that has bipartisan support. But such legislation exists, and if passed would open up a semi-secret world.
A meteor fireball lit up the morning sky over Chelyabinsk in central Russia, producing a shock wave that shattered windows and injured an estimated 500 1,000 people.** Although much of the parent object likely burned up in the atmosphere, Russian authorities say that several meteorite fragments have already been recovered, according to the Interfax news agency.A preliminary analysis posted to the Web site of the Russian Academy of Sciences estimates that the object that struck Earth's atmosphere was a few meters in diameter, "the weight of the order of ten tons [and] the energy of a few kilotons," according to a Google translation.* That would make the Chelyabinsk event a fairly common occurrence, although such strikes usually occur over less-populated regions, not cities of more than a million people.
The Food and Drug Administration (FDA) Thursday approved the first retinal implant for use in the United States. The FDA’s green light for Second Sight’s Argus II Retinal Prosthesis System gives hope to those blinded by a rare genetic eye condition called advanced retinitis pigmentosa, which damages the light-sensitive cells that line the retina.For Second Sight, FDA approval follows more than 20 years of development, two clinical trials and more than $200 million in funding—half from the National Eye Institute, the Department of Energy and the National Science Foundation, and the rest from private investors.
After a campaign that avoided climate change like the plague, President Barack Obama gave a State of the Union speech that put climate change on center stage.
They may run, swim or fly. They may weigh less than a penny or more than a dozen school buses. From humans to whales to bats, the placental mammals—so named for the placenta that nourishes the fetus during development—are mind-bogglingly diverse.
LOS ANGELES—When the Curiosity rover lifted off toward Mars, the spacecraft carried a few stowaways—278,000 bacterial spores, by NASA’s best estimate.
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