Latrodectus mactans, or Southern black widow or simply black widow, is a highly venomous species of spider. They are well known for the distinctive black and red coloring of the female of the species and for the fact that she will occasionally eat her mate after reproduction (hence the name – Black widow). The species is native to North America. The venom might be fatal to humans.

Although these spiders are not especially large, their venom is extremely potent. They are capable to inject the venom to a point where it can be harmful. The males, being much smaller, inject far less venom. The actual amount injected, even by a mature female, is very small in physical volume. When this small amount of venom is diffused throughout the body of a he ...

The Dumbo Octopus belongs to the genus Grimpoteuthis, and is given its nickname based on its resemblance to the large-eared Disney elephant. They can live up to 7,000 meters below the surface, though many are found between 1,000 and 4,000 meters. It feeds unlike any other octopus, by skimming the surface of the sea floor looking for crustaceans to swallow whole.

The largest specimen on record was 1.8 m (6ft) long, weighing 5.9 kg (13 pounds).

Swedish engineers have developed a system that turns sweat into potable water. The Sweat Machine spins clothes to extract liquid from the fibres, filters it and transforms it into water. Their developers say the water extracted from the machine is cleaner than ordinary tap water.

The bleeding tooth fungus grows in Europe and North America. While young, the fungus looks like it is oozing blood. The red liquid is actually an anticoagulant. It lives on the roots of conifer trees and exchanges nutrients in a mutually beneficial relationship.

And, if you're wondering, they are inedible.

Homer will tell you

The tail was discovered in northern Mexico and most likely belonged to a hadrosaur, a duck-billed dinosaur. The tail is 4.9 meters (16 feet) long and is made up of 50 vertebrae. Tails are rare finds, and this is the first discovered in such good condition.

This announcement is the result of over 30 years of extensive research. It was determined that prenatal exposure to low levels of mercury through fish in the mother’s diet or the environment does not contribute to disorders on the Autism spectrum.