Etiketen artxiboa: biología

The mice with two dads: scientists create eggs from male cells
Proof-of-concept mouse experiment will have a long road before use in humans is possible.

Energía casi de la nada: hallan una enzima que convierte el aire en electricidad
Presente en bacterias comunes que pueden sobrevivir incluso en entornos muy hostiles, este descubrimiento tiene potencial para convertirse en una nueva fuente limpia

Weird Lifeform From 500 Million Years Ago Wasn’t an Animal at All
We’ve got a curious case of mistaken identity to report. Fossils previously believed to have been left by prehistoric tentacle-bearing aquatic invertebrates called Bryozoans may in fact have been created by a different source: seaweed.

Simpler Math Predicts How Close Ecosystems Are to Collapse
By replacing thousands of equations with just one, ecology modelers can more accurately assess how close fragile environments are to a disastrous “tipping point.”

Depressive Symptoms And Memory Loss in Older Adults Linked to Telomere Shortening
There’s a tiny, slow-burning ‘fuse’ attached to the ends of all our chromosomes, and as we naturally age, each of our cells loses more and more of that life-giving line.

Así es la triste ‘batalla final’ entre los humanos y la vida silvestre
Elefantes que se acercan a las aldeas y ballenas que chocan contra barcos. Un equipo de investigadores ha documentado los principales frentes del conflicto.

Doce bacterias de todo el mundo, reunidas para extraer tierras raras de las cloacas industriales
Un grupo de científicos investiga microorganismos fotosintéticos que absorben los metales de los que depende la tecnología más avanzada

Esto eran en realidad los monstruos marinos de las leyendas medievales
Investigadores identifican en las descripciones de los mitos nórdicos de hace 2.000 años una misteriosa estrategia de alimentación de las ballenas descubierta en 2011

How Did Birds Get Wings? We May Have Found The ‘Missing Link’ in Dinosaur Fossils
Dinosaur fossils featuring arms with a suspect bend at the elbow and wrist could hint at the presence of an unpreserved tendon that underpins all modern avian flight.

Can Our Brains Be Taken Over?
Several real-life pathogens can change a host’s behavior against their will. Here’s what we know about these zombie-like infections.