Q&A: From 'mongoose-like' to lions, tigers and bears (oh my) — how changes in Earth's climate shaped carnivorans
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Updates every hour. Last Updated: 18-Dec-2025 06:11 ET (18-Dec-2025 11:11 GMT/UTC)
Woodrats weigh less than half a pound but can survive venomous rattlesnake bites that would hospitalize, or even kill, a full-grown human.
A new study lead by UCC palaeontologists discovered that frogs have conserved their ecology in the last 45 million years. Dr Daniel Falk, together with colleagues from UCC, Germany and the United States, studied 45-million-year-old frogs from the Geiseltal fossil site in central Germany. Remarkably, the fossils preserve skin remnants and layers of microscopic fossilised cell structures called melanosomes.
Researchers at MIT and the Broad Institute have found a way to overcome age-related immune system decline by temporarily programming cells in the liver to take over a critical immune system function: helping T cells mature.