Konrad Wothe / Marguerite (Leucanthemum vulgare) flowering in meadow with Meadow Buttercup (Ranunculus acris), Upper Bavaria, Germany

Konrad Wothe / European Beech (Fagus sylvatica) tree in spring, Upper Bavaria, Germany

Konrad Wothe / Stemless Gentian (Gentiana clusii) flower, Upper Bavaria, Germany

Konrad Wothe / Stemless Gentian (Gentiana clusii) flowering in meadow, Upper Bavaria, Germany

Ingo Arndt / Blue Mussel (Mytilus edulis) three centimeters, Helgoland, Germany

Paul D Stewart / The history of life, proposed by Swiss-American naturalist Louis Agassiz. Agassiz would disagree strongly with Darwin's theory of evolution. This diagram from 1855 shows how he understood biological...

Kristel Richard / Eagle hunter woman whipping man on slow Mongolian horse to try to slow him down during game at the Eagle hunter's festival. She is on a faster horse but if he wins the game he is entitled to a kiss....

Kristel Richard / Eagle hunter woman whipping man on slow Mongolian horse to try to slow him down during game at the Eagle hunter's festival. She is on a faster horse but if he wins the game he is entitled to a kiss. E...

Peter Cairns / 2020VISION / Gentle waves breaking on sandy beach, North Uist, Outer Hebrides, Scotland, UK, May

Bryan and Cherry Alexander / Man demonstrating the layers he wears to keep warm (underwear, mid layers, outer layer, jacket & mittens) Antarctica, January 2006. Digital composite.