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Category: biological – Page 176

Godzilla is back in cinemas, and he’s big. Since his first awakening the radioactive, fire-spewing kaiju has grown 60 metres and put on more than 150 000 tons. Godzilla is now 30 storeys tall and weighs as much as a cruise ship. s biology. If Godzilla were real, he would be an incredible specimen.

Weight problems Godzilla would weigh 146 000 tons, according to our keen analysis of the 2014 Godzilla toy and a formula developed by palaeontologists to work out the mass of bipedal dinosaurs.

0,00016 x (circumference of femur in millimetres) 2,73 = mass in kilograms 0,00016 x (Godzilla’s femur: 24 200 mm) 2,73 = 148 571 645 kilograms, or nearly 150 000 tons.

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Am Nat. 2017 Nov;190:694–706. doi: 10.1086÷693854. Epub 2017 Sep 5.

Biological invasions offer interesting situations for observing how novel interactions between closely related, formerly allopatric species may trigger phenotypic evolution in situ. Assuming that successful invaders are usually filtered to be competitively dominant, invasive and native species may follow different trajectories. Natives may evolve traits that minimize the negative impact of competition, while trait shifts in invasives should mostly reflect expansion dynamics, through selection for colonization ability and transiently enhanced mutation load at the colonization front. These ideas were tested through a large-scale common-garden experiment measuring life-history traits in two closely related snail species, one invasive and one native, co-occurring in a network of freshwater ponds in Guadeloupe. We looked for evidence of recent evolution by comparing uninvaded or recently invaded sites with long-invaded ones.

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A few years back, DeepMind’s Demis Hassabis famously prophesized that AI and neuroscience will positively feed into each other in a “virtuous circle.” If realized, this would fundamentally expand our insight into intelligence, both machine and human.

We’ve already seen some proofs of concept, at least in the brain-to-AI direction. For example, memory replay, a biological mechanism that fortifies our memories during sleep, also boosted AI learning when abstractly appropriated into deep learning models. Reinforcement learning, loosely based on our motivation circuits, is now behind some of AI’s most powerful tools.

Hassabis is about to be proven right again.

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Rare mounds of a crystalline mineral have emerged above the surface of Utah’s Great Salt Lake, where they’re expected to remain just a few months before disappearing again.

Scientists think these mounds may be similar to mineral structures on Mars that could preserve traces of microbes that may have lived in the planet’s saltwater lakes billions of years ago.

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