Photo Researchers ftp March 2011

Bighorn sheep (Ovis Canadensis) have hooves adapted to life on high rocky cliffs. Lambs are able to climb with and follow their mother soon after birt...

Aspen (populus tremuloides) along the Routt Conute Buffalo Pass, Colorado. The fall colors here are as big a tourist draw as the fall colors in New En...

300 million year old Fountain Formation of layered sandstone, shale and conglomerate at Red Rocks Park. Lariat Loop Scenic Byway, Colorado.

Mountain ash (sorbus scopulina) along the Routt Conute Buffalo Pass, Colorado. The bright red berries ripen just in time to feed bears, deer, and migr...

Scenic landscape with mountain ash (sorbus scopulina) in the foreground, along the Routt Conute Buffalo Pass, Colorado. The bright red berries on moun...

Dolores River running through the Dolores Canyon along the Unaweep-Tabeguache Scenic Byway, Colorado.

Female hummingbird nesting.

Female hummingbird nesting.

Lariat Loop Scenic Byway, Colorado. The road cut shows Dakota, Morrison, Benton, Niobrara, and Pierre formation sandstones.

San Juan Mountains against a sky that could mean snow. Silver Thread Scenic Byways, Colorado.

The American Pika (Ochotona princeps) stores food in small piles of 'hay' and makes short squeaks to communicate.

Glacier Creek tumbles wildly over Alberta Falls in Rocky Mountain National Park, Colorado.

Photo sequence showing the impact of snow melt on rivers in Colorado. Yampa River in January, Steamboat Springs, Colorado. 1 of 9.

Photo sequence showing the impact of snow melt on rivers in Colorado. Yampa River in February, Steamboat Springs, Colorado. 2 of 9.

Photo sequence showing the impact of snow melt on rivers in Colorado. Yampa River in April, Steamboat Springs, Colorado. 3 of 9.

Photo sequence showing the impact of snow melt on rivers in Colorado. Yampa River in May, Steamboat Springs, Colorado. 4 of 9.

Photo sequence showing the impact of snow melt on rivers in Colorado. Yampa River in June, Steamboat Springs, Colorado. 5 of 9.

Photo sequence showing the impact of snow melt on rivers in Colorado. Yampa River in July, Steamboat Springs, Colorado. 6 of 9.

Photo sequence showing the impact of snow melt on rivers in Colorado. Yampa River in August, Steamboat Springs, Colorado. 7 of 9.

Photo sequence showing the impact of snow melt on rivers in Colorado. Yampa River in September, Steamboat Springs, Colorado. 8 of 9.

Photo sequence showing the impact of snow melt on rivers in Colorado. Yampa River in October, Steamboat Springs, Colorado. 9 of 9.

Drawing entitled "The Robber Crab," from a book called "What Mr. Darwin saw in his voyage round the world in the ship 'Beagle,'" published in 1879.

The R/P FLIP (Floating Instrument Platform) is an open ocean research vessel, measuring 355 feet in length and designed to partially flood until it is...

The R/P FLIP (Floating Instrument Platform) is an open ocean research vessel, measuring 355 feet in length and designed to partially flood until it is...

The R/P FLIP (Floating Instrument Platform) is an open ocean research vessel, measuring 355 feet in length and designed to partially flood until it is...

The R/P FLIP (Floating Instrument Platform) is an open ocean research vessel, measuring 355 feet in length and designed to partially flood until it is...

Judas tree (Cercis siliquastrum) tropics.

Coffee Senna, (Cassia occidentalis), Middle East.

Starry Saxifrage (Saxifraga Stellaris).

St. Patrick's Cabbage. (Saxifraga spathularis).

Himalayan Balsam (Impatiens glandulifera) Flowers and unripe fruits. Yorkshire.

Horse chestnut. (Aesculus hippocastanum).

Dog's Mercury (Mercurialis perennis).

(Euphorbia tugelensis) South Africa.

Crown of Thorns (Euphorbia millii). South Africa.

Irish Spurge (Euphoria hyberna). Ireland.

Canary Island Spurge (Euphorbia canariensis). Canary Islands.

Canary Island Spurge (Euphorbia canariensis). Canary Islands.

Greek spiny spurge (Euphorbia acanthothamnos) Turkey.

Tasmanian waratah (Telopea truncata). Australia.

Dwarf cornel (Cornus suecica).

Mangrove (Rhizophora sp.) aerial roots, New Zealand

Giant rhubarb (Gunnera tinctoria). Flower head.

(Gunnera tinctoria) Giant rhurbarb. Co.Galway, Eire Ireland.

Red Clover (Trifolium Pratense).

Star Clover (Trifolium stellatum). Turunc, Turkey.

Purple saxifrage (Saxifraga oppositifolia). Large format.

Alpine saxifraga (Saxifraga nivalis).

Grass of parnassus (Parnassus palustris). Sutherland, UK.

Exxon Valdez oil-spill. Clean-up operation under way on the rocky coastline of Knight Island, Alaska, after the world's worst environmental disaster d...