Jumaat, April 28, 2006

NG April 2006 wallpaper

Land of Water and Rock
Photograph by Michael Melford
From "Glen Canyon Revealed," National Geographic, April 2006

Two boulders with very different tales sit on the shore of Padre Bay, an arm of Lake Powell. The darker rock on the left appears to have always been above the water line, even before the drought began. The rock on the right has a whitish crust of minerals, indicating that it was submerged until the lake level dropped.

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Cold Roads of Home
Photograph by Michael Poliza
From Visions of Earth, National Geographic, April 2006

Gentoo penguins waddle through a web of icy paths on the slope between their hilltop rookery on Antarctica's Danco Island and the open water where they feed.

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Magnificent Meander
Photograph by Michael Melford
From "Glen Canyon Revealed," National Geographic, April 2006

A speedboat traces the old curves of Utah's Reflection Canyon, a branch of Glen Canyon. Both were flooded by Lake Powell after the Colorado River was dammed in 1963. In recent years scant snowfall has caused the lake to drop more than 100 feet (30 meters), exposing a white ring left by high water.

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Heavenly Moment
Photograph by Izan Petterle
From Visions of Earth, National Geographic, April 2006

Blankets of clouds soften a sunset over Guanabara Bay in Rio de Janeiro, Brazil, and suspend beachgoers and surrounding mountains in a moment of ethereal light.

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Delicate Delivery
Photograph by József L. Szentpéteri
From "Dragonflies," National Geographic, April 2006

After mating, a female Formosan jewelwing beats white-tipped wings as she deposits fertilized eggs into plants just below the surface of a stream in Taiwan. After eggs hatch, the larvae sink to the bottom for six months before emerging.

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Staying Connected
Photograph by Georg Rüppell
From "Dragonflies," National Geographic, April 2006

Airborne after mating, a male vagrant darter keeps the female in tow to prevent competing males from inseminating her.

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