Hyphessobrycon pulchripinnis/ Lemon Tetra. This species is a popular aquarium fish and is bred on a commercial basis in several countries, with a selectively-bred albino form also available. Wild specimens are rarely collected due to the low price of the farmed fish, but the origin of the commercial strain is questionable. The species was considered endemic to the rio Tapajós basin, but in the early 1990s fish appearing identical to the aquarium form were photographed in the...
Charles Darwin Charles was employed as naturalist on HMS Beagle from 1831-1836. He first made his name as a geologist, but is remembered for his momentous contributions to biology - primarily his demonstration that evolution has occurred and his discovery of the principle of natural selection of heritable variation as the cause of evolution. His book Origin of Species was published in 1859. Photo by SSPL/Getty Images
How the pseudoscience of Social Darwinism nearly destroyed humanity
Following the publication of Darwin’s On the Origin of Species in 1860, many political theorists and opportunistic politicians applied his findings to human society. In the 20th century, these ideas were put into practice — and it nearly destroyed us. Here’s why Social Darwinism was one of the worst ideas ever.
"A couple of English Fantails pigeons. Charles Darwin kept English Fantails in his pigeon loft and used them as examples in the first chapter of "On the origin of species". They are bred in more than 50 colours and marking patterns." / Photo by David Degner