Marie Read / Northern Cardinal (Cardinalis cardinalis) female perched amid berries and seedheads with falling snow, New York, USA. November. Non-ex.

Nick Upton / Seaweeds including Thongweed / Sea thong (Himanthalia elongata), Tangleweed kelp (Laminaria digitata), Toothed wrack (Fucus serratus) and Dulse (Palmaria palmata). Exposed on rocky shore on low spring...

Ashley Cooper / Sheep stuck in heavy snow near Ambleside, England, UK. March 2006

Ashley Cooper / Women walking the dog in heavy snow near Ambleside, England, UK. March 2006

Jiri Lochman / Flint flakes, Mungo National Park, Willandra Lakes UNESCO Natural World Heritage Site, New South Wales, Australia.

David Pattyn / Partial eclipse of the sun, Anjajavy Private Reserve, north west Madagascar, September 2016.

Solvin Zankl / Red dulse (Palmaria palmata) on white background, from Roscoff, France, April. Preserved specimen.

John Cancalosi / Vermiculite flakes, a hydrous, silicate mineral classified as a phyllosilicate, it expands greatly when heated.

Solvin Zankl / Snowflake magnified under microscope, Lilehammer, Norway

Solvin Zankl / Snowflake magnified under microscope, Lilehammer, Norway

Solvin Zankl / Snowflake magnified under microscope, Lilehammer, Norway

Solvin Zankl / Snowflake magnified under microscope, Lilehammer, Norway.