Mating frogs may have been occasionally getting it wrong for hundreds of millions of years. We know that males today will sometimes select an inappropriate partner during the breeding season – a frog from a different species, a turtle, a fish or even an inanimate object. Now there is evidence that these mistaken attachments could be an ancient feature of frog reproduction, arising early in the amphibians’ evolution.

Frog mating is often hard to miss. In most species it involves a process called amplexus, in which males grip onto a female tightly for hours or days at a time until the eggs are fertilised. But there are plenty of records of male frogs grappling an unpromising target such as a frog from a different species or a dead individual. One explanation is that such mistakes are more likely to happen in species that breed in large numbers with a low ratio of females to males, and where multiple species occupy the same breeding pond.

Konrad Lorenz once observed a Shell Parakeet who grew amorous with a small celluloid ball. And many other animals exhibit mating behavior toward what researchers refer to as "biologically inappropriate objects." Bulls will treat almost any restrained animal as a receptive cow. Their general rule in life seems to be, "if it doesn't move away and can be mounted, mount it!"

During the early 1950s, researchers at Walter Reed Army Medical Center surgically damaged the amygdala (a region of the brain) in a number of male cats. These cats became "hypersexual," attempting to mate with a dog, a female rhesus monkey, and an old hen. Four of these hypersexual cats, placed together, promptly mounted one another.

In 1933, German coleopterist and civil engineer Oscar Scheibel, residing in Ljubjana, Slovenia, then part of the Kingdom of Yugoslavia, purchased from a Slovenian biologist several specimens of an unknown beetle that had been found in the caves near the city of Celje. In 1937, Scheibel published in Entomologische Blätter a description of a light-brown ground beetle a mere five millimeters long under the name Anophthalmus hitleri. After the war, Scheibel is supposed to have claimed that naming the beetle in honor of Hitler had been a subversive act: after all, this was an unlovely species of brown, blind cave beetle that lived hidden from view. This defense must be squared with the original description, the final sentence of which reads, "Dedicated to Reich Chancellor Adolf Hitler, as an expression of my reverence." No official response from the Reich Chancellery was documented in this case.

To date, Anophthalmus hitleri has been found in but a handful of caves in Slovenia. Particularly after the media discovered and circulated the Hitler beetle story in 2000, interest in this species has been rekindled. A well-preserved specimen of Anophthalmus hitleri can fetch upward of 2,000 euros on the collectors' market; among the bidders, certainly some wish to add the Hitler beetle to their collection of Nazi memorabilia. . .

At least one other species has been named after Adolf Hitler: the fossil Roechlingia hitleri, which belongs to the Palaeodictyoptera, a group of primitive fossil insects. Roechlingia hitleri was described in 1934 by German geologist and paleontologist Paul Guthörl. . .

Extensive research has failed to turn up any other species named in honor of Hitler. This seems surprising, as this form of salute could have proven quite expedient to aspiring German scientists from about 1933 until 1945, at the latest...

The likeliest explanation is that when Hitler patronyms were planned, approval was sought in advance from the Führer (by way of the Reich Chancellery), whether out of respect or perhaps fear of potential consequences. In 1933, for instance, a rose breeder submitted a written request to the Reich Chancellery for permission to introduce to the international market one of his best rose varieties, bearing Hitler's name. Similarly, a nursery owner from Schleswig-Holstein hoped to name a "prized strawberry variety" the "Hitler strawberry," in honor of the Reich Chancellor. They already had a "Hindenburg" strawberry variety in their catalog, he added. In reply to both cases, Hans Heinrich Lammers, Chief of the Reich Chancellery, sent almost identical letters, in which the inquiring parties were informed that, "upon careful consideration, [the reich Chancellor] requests that a name in his honor most kindly not be used." . . .

Perhaps this fundamental rejection of honorary names is the reason that so few hitleris exist.

All things considered, it appears that the elephant's testes may experience temperatures dangerously high for mammalian sperm production, even under normal body temperatures. High temperature metabolism tends to be coupled with cellular oxidative stress, which increases the probability of mutations. Such mutations could be gene duplications, including multiplications of the TP53 gene.

We concluded that a corn rock most likely forms when small blobs of molten lava splash down over an ear. A falling blob of basalt lava would have a low enough viscosity to envelope an ear before the molten hardens to solid rock...

Obviously, it would not be safe for humans to carry ears of corn into the fallout zone of a towering lava fountain. A safe setting, however, would be at what geologists call an hornito (means "little oven" in Spanish). An hornito is essentially a miniature volcano that spews molten blobs of melt that fall back to Earth and accumulate into a welded-together chimney-like stack as they solidify and cool...

So, early Native Americans living near the present site of Sunset Crater Volcano witnessed an eruption that at some stage could be safely approached to place ears of corn at the base of an active hornito.

To test that hypothesis, co-authors Rodger Kram and James Wilson spent the summer of 2020 training until they could haul a heavy log some 15 miles using tumplines. "Some people baked sourdough bread during COVID," said Kram, an emeritus professor of integrative physiology at the University of Colorado at Boulder. "Instead, we carried sand and heavy logs around using our heads."

From a boiling bath of hot sulfuric acid, a laboratory technician lifts two rods of plastic. One has charred and deteriorated. The other-a rod of DuPont's new Teflon tetrafluoroethylene resin-is not affected at all by the highly corrosive hot acid. Teflon resists the most corrosive acids and solvents to a degree unequaled by any other plastic. It is not attacked even by aqua regia which dissolves gold and platinum.