Flowering Predator on the Loose in a D.C. Garden
A keen-eyed gardener delivers disappointing news to Michele Norris: The beautiful, beloved purple flowering plant in her garden is an invasive species that, if it spreads, could snuff out other plants in its wake.
Good Signs from Greenland's Ice Sheet
One unknown in sea-level rise is how Greenland's massive ice sheet will respond to global warming. Scientists visiting during the annual summer thaw witnessed 3,000-foot waterfalls and new raging rivers from ice melts. This week, they report that meltwater from the ice sheet won't have a "catastrophic" effect.
Gnarls Barkley and a Soulful Predecessor All Songs Considered host Bob Boilen hears something special in the new album from the innovative neo-soul duo Gnarls Barkley. It reminds him of a different groundbreaking soul artist who died more than 40 years ago: Otis Redding.
Democrats Back on the Stump After Debate
The Democratic presidential candidates went in different directions after Wednesday's debate in Pennsylvania. Sen. Hillary Clinton was in Philadelphia Thursday, while Sen. Barack Obama went south to Raleigh ahead of May's North Carolina primary.
Mitt Romney's Top Ten List
Departed presidential candidate Mitt Romney, the former Massachusetts governor, was a hit at the annual dinner of the Radio and Television Correspondents in Washington, D.C. He offered a "Top Ten" list of his reasons for leaving the White House race.
Former CIA Official Under Investigation over Tapes
Jose Rodriguez, until recently the head of the CIA's clandestine service, is the target of two inquiries regarding the destruction of videotapes showing CIA officers using harsh interrogation methods. He has so far refused to talk with investigators without a promise of immunity.
'Butterfly Effect' Theorist Lorenz Dies
Meteorologist Edward Lorenz has died. He laid the foundations for the field of scientific study called chaos theory. He famously suggested that a butterfly flapping its wings in Brazil could ultimately produce a tornado in Texas.
'CDO Squared Senior Tranche' Prompts Bank Woes
For the third time in just a few months, Merrill Lynch has taken a huge, multi-billion-dollar "writedown" on its investments in mortgage-backed securities. Banks are suffering big losses because of one particular financial instrument: the CDO-squared senior tranche. What is it?
Citing Inflation, Vietnam Trims Rice Exports
Vietnam has become the world's second-largest exporter of rice (after Thailand). But the effects of inflation have persuaded the Vietnamese government to cut back on rice exports.