Stemonitis axifera is a species of slime mold. It fruits in clusters on dead wood, and has distinctive tall reddish-brown sporangia, supported on slender stalks. The species was first described as Trichia axifera by Jean Baptiste François Pierre Bulliard in 1791. Thomas Huston MacBride transferred it to the genus Stemonitis in 1889. Stemonitis fasciculata and Stemonitis smithii are synonyms.

A giant river otter, the world's largest otter species, looks out of its enclosure at the newly completed River Safari in Singapore, on March 25, 2013. (Photo by Wong Maye-E/Associated Press)

Images are projected onto the Empire State Building as part of an endangered species projection to raise awareness, in New York August 1, 2015. (Photo by Eduardo Munoz/Reuters)

Several new species of peacock spider – just a few millimetres long and featuring extraordinary colours – have been discovered in Western Australia and South Australia. Jürgen Otto, a biologist from Sydney, has been researching the arachnids since 2005, and has gained a significant following online with his footage. He believes there are now 48 confirmed species of peacock spider within the Maratus genus, found across Australia but particularly in Western Australia – and many more awaiting confirmation. Here: Maratus Tasmanicus, one of seven new species of peacock spiders studied by the Sydney biologist Jürgen Otto. (Photo by Jürgen Otto)

Mungo Thomson is a contemporary visual concept artist from Los Angeles. His work can be described as simple but fascinating. His interest in what he calls ‘the dumb idea’, something simple but interesting, makes his art so special.

“When you think of Darrell Eager, you think of a journeyman photographer with taste and a talent for conceptual thinking. Darrell's great at working with vague ideas and concepting back and forth until they become real and concrete, appropriate for each project”.

Here’s a series of imaginary island illustrations created by concept artist Pierre-Antoine Moelo aka Péah.