Originally published on Mon June 18, 2012 12:12 pm
President Obama's announcement Friday that he is using his executive authority to defer deportation proceedings for young immigrants who entered the U.S. illegally but meet certain requirements was just the latest example of the president's use of his power to act without Congress on policy issues.
In some countries of Africa, there's a land rush under way as investors claim farmland, establish mega-farms and try to cash in on high prices for food and biofuels. These deals are controversial. Critics accuse investors of dispossessing subsistence farmers.
Reporting in Nature, an international team of scientists say they've visualized the structure of a protective protein coat that surrounds many bacteria, down to the scale of a single atom. Structural microbiologist Han Remaut, co-author of the study, discusses potential applications of the research.
A moray eel, a flock of geese and a shrunken head are just a few of the things found in and around Her Deepness' office. Earle, an explorer-in-residence at the National Geographic, has desks all over the country. A few months ago we stopped by her Oakland home-base for the next installment in our Desktop Diaries series.
Reporting in Science, researchers write that a red disk painted in Spain's El Castillo cave is at least 40,800 years old--making it the oldest known European cave art. Archaeologist Alistair Pike discusses how his team dated the disk, and whether Neanderthals could have painted it.