An adult female green sea turtle (Chelonia mydas), coming ashore to nest on Isla Espiritu Santo, Sea of Cortez, Mexico, North America

Yellow cake, powdery uranium oxide in Burwell filter press, Uranium City, Saskatchewan, Canada, North America

Crowd of people, white powder and white clothes, evening mood, carnival La Fiesta de los Indianos, Las Palmas de Gran Canaria, Canary Islands, Spain, Europe

Andrew Fodor, Sheri Kashman, Senja Palonen, Tony Chan and Daisy skinning up to a powdery descent from Table Mountain. Mt. Baker backcountry. Glacier, Washington, USA, United States of America

A woman and two children laugh while sledding in deep, powdery snow.

A man makes a sharp turn through powdery snow while snowmobiling on Owlshead Mountain.

A women riders her snowmobile through a powdery field leaving the evidence of her turns behind her.

Agriculture - Grape powdery mildew (Uncinula necator), comparison of infected wine grapes (left) and healthy grapes (right).

Livestock - Large flock of sheep bunched together on a dry dusty pasture / near Wanaka, New Zealand.