Ancient fish extinction shaped future vertebrates says study
University of Chicago researchers link Romer's gap to a mass extinction 360 million years ago that cleared seas for sharks and tetrapods. The event aided the rise of ray finned fishes and helped set the path for mammals and modern marine life.
MENTIONED IN THIS ARTICLE
Los Angeles
University of Chicago
Romer
Proceedings of
The
National Academy of Sciences
Earth
Lauren Sallan
Sallan
Michael Coates
Stronger vaginal gels aim to block HIV transmission
Researchers rate microbicides as key in HIV prevention for women in developing regions. Tenofovir gel trials in South Africa advance as daily pills and topical films, rings, and rectal versions are explored to improve protection and access amid testing and adherence challenges.
MENTIONED IN THIS ARTICLE
Washington
Pittsburgh
Cochair
Sharon Hillier
University of Pittsburgh
sub-Saharan Africa
Salim Abdool Karim
Centre For the
South Africa
University of KwaZulu- Natal
Regina Osih
University of Witwatersrand
Aging brain vessels link to higher fall risk in elderly
A study of 420 adults over 65 found that reduced vasoreactivity in brain vessels during stress correlates with slower gait and a 70 percent higher fall risk. Researchers used ultrasound to measure blood flow at rest and during rapid breathing and tracked falls over a 12 foot gait test.
MENTIONED IN THIS ARTICLE
Joe Verghese
Albert Einstein University College of Medicine
Centers For Disease Control and Prevention
Farzaneh A. Sorond
Harvard University
Institute For Aging Research
Journal
Neurology
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Amina Khan
Los Angeles Times
Hillier
Lisa Rohan
MaGee Women’s Research Institute
Wik
Reed
Free Arkin
Jungle Junction
Iles
Lightner
Port Clinton
Ohio
Water Point
Xam and
AspenDental
Aspendent.com
Othr
N. Ridge RD
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