Uncategorized
- Astronomy
In the Beginning: Dark matter builds galaxies, feeds quasars
Cosmologists say they have found compelling evidence that massive galaxies were already in place when the universe was less than a billion years old.
- Paleontology
Wings Aplenty: Dinosaur species had feathered hind limbs
A team of Chinese paleontologists has discovered fossils of a small, feathered dinosaur that they say had four wings.
- Earth
Estrogens classified as carcinogens
The sex hormones known as steroidal estrogens, which are used in hormone-replacement therapies and birth control pills, have joined a government list of known human carcinogens.
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Researchers’ conclusions in this article that there is a “need to revisit controversial claims about the health benefits and risks of bed sharing for babies” seem to me to miss the point.
