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And I'm Melissa Block.
Scientists in Switzerland have reinforced a huge discovery they announced last summer. They said today that they've almost certainly found the Higgs particle, the long-sought missing link that helps explain the basic nature of our universe. This firms up similar results they unveiled with great fanfare in July.
But NPR's Richard Harris reports, it's actually disappointing news for some scientists.
Originally published on Thu March 14, 2013 1:47 pm
Monarch butterflies that once covered 50 square acres of forest during their summer layover in central Mexico now occupy fewer than 3 acres, according to the latest census.
The numbers of the orange-and-black butterflies have crashed in the two decades since scientists began making a rough count of them, according to Mexico's National Commission of Natural Protected Areas.
At a news conference Wednesday, the commission said the count was down 59 percent from December 2011 levels, when the insects filled 7.14 acres of fir trees in central Mexico.
Today is March 14, or "3/14," the first three digits of Pi. It's a day celebrated around the (geek) world as "Pi Day." Pi, of course, is the ratio of the circumference to the diameter of a circle. It was first recorded by Archimedes, but you can replicate his discovery in all kinds of ways.
"Scientists working with data from a large particle accelerator in Europe are now almost certain they have pinned down the elusive sub-atomic particle known as the Higgs Boson," NPR's Joe Palca tells our Newscast Desk.
Or, as it's also known, the "God Particle" (more on that moniker below).