President Barack Obama meets with congressional leaders in the Cabinet Room on July 7.
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The scene has become strikingly familiar over the 2 1/2 years of the Obama administration: congressional leaders footslogging in front of cameras to the White House for another "bipartisan" meeting to resolve yet another stalemate.
This time, however, the Thursday morning debt-ceiling confab in the Cabinet Room opened with a slightly different feel.
Scientists have finally demonstrated that sex is useful.
A team from Indiana University found that worms that have sex were better able than asexual worms to stay one evolutionary step ahead of dangerous parasites.
The finding, published in the journal Science, provides the first direct evidence that sexual reproduction improves a species' ability to survive in a fast-changing environment. And it suggests that parasites, including bacteria and viruses, are one reason species developed sexual reproduction in the first place.
A Florida panther ended up dead after it got into a fight with another panther. The story wouldn't be remarkable, if it weren't for the fact that scientists say only about 160 Florida panthers remain the wild.
Florida Fish and Wildlife Conservation Commission panther team leader Darrell Land says the male panther was between 7 and 9 years old. Its carcass was found Wednesday by a citrus grove manager near Immokalee.