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#biology

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When Spanish colonizers established a town in the mountains of Bolivia in the 1500s, they might have expected to expand their communities by having babies, but they could not. While Indigenous folks raised families, not a single child of European descent was born for decades. It was all down to the lack of oxygen at altitude, which the settlers were not genetically adapted to deal with. @KnowableMag reports on how scientists are now studying this to see if they can help pregnant people whose bodies are struggling to provide enough oxygen to their fetuses, at any altitude.

knowablemagazine.org/content/a

Continued thread

50 years ago, Tim Bliss and Terje Lømo worked in the Oslo lab of the late neuroscientist Per Andersen, where they made a momentous discovery: the fact that when a neuron signals to another neuron frequently enough, the second one will later respond more strongly to new signals for hours afterwards. The phenomenon is called long-term potentiation (LTP) and it’s fundamental to how we learn and remember. @KnowableMag talked to Bliss and Lømo about their discovery, and to other neuroscientists about how they’re applying knowledge about LTP to their research about memory disorders, chronic pain and more.

knowablemagazine.org/content/a

Knowable Magazine | Annual ReviewsIt began with a rabbit: Unraveling the mystery of memoryHalf a century after the discovery of long-term potentiation, we’re still learning how the brain remembers

✨ A mes heures perdues, il m'arrive aussi parfois de faire du dessin plutôt "jeunesse" ... ^^ En ce moment je suis un peu débordée, je n'ai donc aucune heure perdue ! Celles-ci ont déjà quelques années... Mais j'ai récemment refait des tirages sur papier Fine Art. 🤓
✨ Si ça vous botte, vous pouvez les trouver ici :
clairemotzart.etsy.com/listing
✨ Est ce que ce genre de "choses" moins naturalistes, vous parle ?? 🤔
°°°°°°°°
#illustration #illustrationjeunesse #dessinenfant #enfants #jeunesse #nature #naturephotography #naturephoto #naturaliste #wildlife #wildlifephotography #renard #ornithology #ornithologie #mesange #loutre #biology #biodiversite

Africa’s savanna #elephants declined by 70% and forest elephants by over 90% between 1964 and 2016. Though their decline was known, its full scale and regional impact were unclear until now. A #biology professor explains: buff.ly/CILyJpC
By George Wittemyer, Colorado State University #ivorytrade 🐘

The ConversationAfrica’s elephants have been in dramatic decline for 50 years. What can be done to save them – new studyMaintaining current elephant numbers, let alone reversing declines, requires new thinking and conservation innovation.