In 1970, the same year as "Bell Bottom Blues" hit the charts, bell-bottomed greens thronged the first Earth Day events, where they learned, chanted, sweeped—and even littered.

See Handel being cleaned, a Tibetan exile detained in India, and a ghostly paper-lantern protest in these glimpses of life around the globe.

An undersea cleaning party and the world's largest baked alaska join the ranks of oddball events that have been held on Earth Days past to draw attention to environmental causes.

Legendary lovers Antony and Cleopatra may be buried in one of three chambers beneath an ancient Egyptian temple, say archaeologists who have found a telltale bust, mask, and coins.

New scans of an almost perfectly preserved baby mammoth indicate that the youngster was healthy and well fed before it died, researchers report.

Conservation photographers have documented the animals along the 1,950-mile border—and how it may be altered by the construction of the new U.S.-Mexico border fence.

No male of the species has ever been found, but that's OK. "They appear to have evolved a new mode of reproduction," an expert says.

Pedestrian-friendly boulevards, suburbs lush with rooftop gardens, and a central train hub are among proposals to restructure Paris to be the most environmentally sustainable city in the world.

From a reported 270,000 sharks fished daily to 106,000 cans of soda consumed every 30 seconds, brain-boggling measures of human consumption have been made visual--just in time for Earth Day.

See the last days of a California tent city, Japanese courtesans on parade, an artist with a third "ear" on his arm, and more in our editor's picks of the week's best news pictures.

Tropical seas sometimes blaze with the luminous green love rituals of the marine fireworm. Now scientists have been set atwitter by the industrial applications of the luminescence—and the quirky habits of the seafloor-dwelling animals that produce it.

Nearly thirty mummies have been found in an excavation of 52 rock tombs in Lahun, about 75 miles (120 kilometers) south of Cairo.

It can look and act like a Slinky, but plasma ejected from the sun is no game. Now new 3-D technology is allowing for early warnings of the worst space weather.

Lightning crackled through an Alaska volcano's giant ash cloud, and an amateur photographer caught its fleeting fury. Meanwhile, scientists hope to solve a mystery with new "maps" of lightning inside the cloud.

Today the Obamas' new Portuguese water dog, Bo, makes his official debut. Bo needs lots of activity or he may end up "running full-speed down the West Wing or barking at Republicans," an expert said.