University of Texas at Austin

Archive for November, 2012


Friday, November 30, 2012

Eavesdropping on the Secret Lives of Fish

There’s a problem for scientists trying to understand why populations of southern flounder have been in such decline in the waters of the Texas Gulf.

“They live underwater,” says Benjamin Walther, assistant professor of marine science in the College of Natural Sciences. “We can’t just follow them from birth to death. You can tag a fish with acoustic or satellite tags when it’s an adult, but typically the young are too small and fragile. So you’re missing that whole big piece
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Friday, November 16, 2012

Silver Tsunami brings crest of Alzheimer’s Disease

It’s called the “Silver Tsunami” – the swelling number of baby boomers surpassing age 65. As medical advancements extend their lives, they’re expected to live well into their 80s and 90s – outlasting any generation in American history.

But among Americans over 80 – who represent the fastest growing segment of the U.S. population – half are debilitated with a neurodegenerative disorder. Of this group, 5.4 million now have Alzheimer’s Disease. By year 2050, that number is expected to balloon to
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Tuesday, November 6, 2012

The White Widow Model: A New Scenario for the Birth of Type Ia Supernovae

Supernova remnant 0509-67.5 was searched for a left-behind partner star without success. (NASA)

Supernova remnant 0509-67.5 was searched for a left-behind partner star without success. (NASA)

J. Craig Wheeler has studied the exploding stars called supernovae for more than four decades. Now he has a new idea on the identity of the “parents” of one of the most important types of supernovae — the Type Ia, those used as “standard candles” in cosmology studies that led to the discovery of dark energy, the mysterious force causing the universe’s expansion to speed up.

Wheeler lays out
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