Novas de Ciência

Esta semana no site da Nature:

Os novos Dr. Fausto:

"Investigations into research misconduct cost US institutions more than US$110 million per year, estimates a study published this week. But experts contacted by Nature question whether calculating the cost of investigation is the right way to measure the impact of research misconduct."

E afinal, o nosso Sistema Solar é um bocadinho mais antigo:

"A meteorite found in the Sahara Desert has helped to pin down the age of the Solar System and shed light on how it may have formed.

The new estimate, which comes from measuring the ratios of lead isotopes inside the chondrite — an ancient stony meteorite — suggests that the Solar System is 4.568 billion years old. This is 0.3–1.9 million years older than some previous studies projected. The relatively small revision means that models of the gas and dust that gave rise to the Solar System should have around double the amount of a certain iron isotope, iron-60, than previously suggested."

Hasta!