FRONTLINE's "Inside the Teenage Brain" focuses on work done by Dr. Jay Giedd at the National Institute of Mental Health in Bethesda, Md., together with colleagues at McGill University in Montreal. In a particularly interesting study, Dr. Giedd looked at the brains of 145 normal children by scanning them at two-year intervals. This was work Giedd was only able to do with magnetic resonance imaging, because it requires neither harmful dyes nor radiation, making the study of normal children, as opposed to sick ones, ethically tenable. Read More...
Ella DaviesBBC29 enero 2015
A lo largo de los años, la ciencia se ha equivocado respecto al comportamiento de los hipopótamos.
En griego antiguo, hipopótamo significa caballo de río.
Sin embargo, los estudios más recientes descubrieron que este mamífero está más relacionado con las ballenas.
Tampoco sudan sangre, como se pensaba antes, sino que despiden un fluido rojo que contiene una suerte de pantalla solar antibacteriana.
Con un estómago dividido en cámaras que funciona como una fábrica que fermenta la materia vegetal, siempre se pensó que eran herbívoros. Read More...
RAFAH, Gaza Strip (AP) — Israel escalated airstrikes across the Gaza Strip on Tuesday, crushing families in the rubble of residential buildings, as health officials said hundreds of Palestinians were killed in the past day and medical facilities were shut down because of bomb damage and lack of power.
The massive air bombardment continued through the night as Israeli jets hit sites across Gaza, the Hamas-run Interior Ministry said.
WATCH: A look at life inside Gaza amid airstrikes and worsening humanitarian crisis Read More...