In determining the gender of offspring, fathers may be getting shortchanged.
Because mothers can influence their offspring in a number of ways, from copulation to birth, while fathers have control over sperm only, it has long been assumed mothers are more important. In mammals, it is also believed that offspring sex ratios can only be determined by the mother, since fathers have always been thought to inseminate an equal proportion of X and Y sperm, having a random effect on offspring sex that they could not shift from equality, or 50:50.
It won't matter if all the ice melts and seas rise 100 feet, even if frogs rain from the skies and dogs and cats are living together, one species will be around until the sun explodes.
That species is the eight-legged micro-animal tardigrade, the world's most indestructible species.
Ah, life is good lately; can’t stop winning. Almost never recommend anybody, ‘cuz humans disappoint, but if I do, its winners. Remember that “Erectus walks among us
” guy with his “Out of Europe
” theory? Yep – that’s the one I recommended
, the most despised of the low. I only recommend those who are near my level. Well, ok, that orange fat disappoint I endorsed for POTUS is obviously not anywhere near my level, but that’s another story – I knew he would win and I just love to “Told’yer so!”
The oldest-known primate skeleton, 62-million-years-old, dwelled in treetops, not on the ground, according to a new analysis.
The study shows that Torrejonia, a small mammal from an extinct group of primates called plesiadapiforms, had skeletal features adapted to living in trees, such as flexible joints for climbing and clinging to branches. Previously, researchers had proposed that plesiadapiforms in Palaechthonidae, the family to which Torrejonia belongs, were terrestrial based on details from cranial and dental fossils consistent with animals that nose about on the ground for insects.
We are at the top of the food chain, but some of our senses got short shrift when it came to other animals. Dogs can hear at frequencies we can't, mantis shrimp got 16 visual pigments and we are stuck with just 3.5, and don't even get other animals started on our pathetic sense of smell.
But a weak nose in humans is really just a 19th century myth that won't go away, like homeopathy and organic food, according to a new analysis. Instead of being limited to a paltry 10,000 odors, humans can discriminate maybe one trillion different ones, the same as dogs and rodents.
The faulty persistent claim is thanks to Paul Broca, a 19th century brain surgeon and anthropologist as the culprit for the falsehood that humans have an impoverished olfactory system.
Ernst Haeckel created the first phylogenetic ‘tree of life’ of organisms 150 years ago in Jena, and published it in his major work, the ‘General morphology of organisms.’ It allowed for us to see diversity and the connections between species.
It was not only Darwin who influenced Haeckel’s creation. He was also inspired by a linguist who was his colleague and friend in Jena. “As early as 1863, the linguist August Schleicher created a first ‘family tree’ to represent the development of Indo-Germanic languages,” says Prof. Uwe Hoßfeld of Friedrich Schiller University Jena in Germany. “Ernst Haeckel eventually adopted this form of visualization.”
Evidence preserved in the internal skeletal structure of the famous Lucy fossil (
Australopithecus afarensis -
"southern ape of Afar") suggests the ancient human species frequently climbed trees, according to a new anal
Around 65 million years ago, a massive asteroid crashed into the Gulf of Mexico, causing an impact so huge that the blast and its aftermath wiped out about 75 percent of all life on Earth, including most of the dinosaurs. It’s known as the Chicxulub impact and it may possibly have created habitats for our early life on Earth because the asteroid hit the Earth’s surface with such force that it pushed rocks – at the time about 6 miles beneath the surface – farther downward and then outward.
The following is truthfully reporting a conversation between Lovely Liberal Lisa from the sociology department, a stupid Donald Trump follower in the mathematics department, and a Heil Hitler screaming Nazi, the stupid Donald Trump lover’s secret best friend, as it actually happened in the stupid Donald Trump lover’s office:
Heil Hitler Screaming Nazi: Heil Hitler! Congratulations to your victory! Our victory!
Stupid Donald Trump Follower: Hey, what the FiretrUCK, don’t do that. The walls have ears.
Heil Hitler Screaming Nazi: But The Donald has won! Free speech again. Let’s turn on the gas!