Bar-Headed Geese Slow Their Metabolism to Soar over Everest
Bar-Headed Geese Slow Their Metabolism to Soar over Everest
The birds also decrease their heart rate and chill their blood to maintain flight in hypoxic conditions.
Bar-Headed Geese Slow Their Metabolism to Soar over Everest
Bar-Headed Geese Slow Their Metabolism to Soar over Everest

The birds also decrease their heart rate and chill their blood to maintain flight in hypoxic conditions.

The birds also decrease their heart rate and chill their blood to maintain flight in hypoxic conditions.

blood
Bedbugs Predated <em>T. rex</em> and Triceratops, New Family Tree Shows
Bedbugs Predated T. rex and Triceratops, New Family Tree Shows
Ashley Yeager | May 17, 2019
The finding overturns the idea that the insect’s first victims were bats and reveals that certain species started targeting humans as a side snack, not as a main meal.
A New Role for Platelets: Boosting Neurogenesis After Exercise
A New Role for Platelets: Boosting Neurogenesis After Exercise
Katarina Zimmer | Mar 21, 2019
A mouse study finds that when blood platelets are activated during exercise, they release factors that increase the number of newborn neurons in the hippocampus.
Young Blood Unproven as Anti-Aging Treatment: US FDA
Young Blood Unproven as Anti-Aging Treatment: US FDA
Carolyn Wilke | Feb 20, 2019
The agency warns that plasma treatments costing thousands of dollars, which supposedly treat the infirmities of old age, have not been proven “safe or effective.”
Protein Changes Detected in Blood Years Before Alzheimer&rsquo;s Onset
Protein Changes Detected in Blood Years Before Alzheimer’s Onset
Jef Akst | Jan 21, 2019
The observation could pave the way for a blood test to predict disease progression in people with a genetic predisposition to developing the neurodegenerative disorder.
Image of the Day: Blood and Guts
Image of the Day: Blood and Guts
Carolyn Wilke | Dec 13, 2018
Researchers find that stem cells in the human intestine may provide up to 10 percent of circulating blood cells.
How Red Blood Cells Get Their Dimples
How Red Blood Cells Get Their Dimples
Ashley Yeager | Sep 1, 2018
Myosin proteins tug on the cell membrane, giving an erythrocyte its distinct shape.
Surveying Biodiversity with Leeches
Surveying Biodiversity with Leeches
Diana Kwon | Jun 1, 2018
Scientists are searching for signatures of mammals within the blood meals of the invertebrates.
Lizards’ Green Blood Evolved Four Times
Lizards’ Green Blood Evolved Four Times
Kerry Grens | May 16, 2018
The uncommon hue is present in skinks that aren’t closely related, but the advantage of the odd trait remains anyone’s guess.  
Colorblindness Study Reveals Unexpected Way to Make Blood Vessels
Colorblindness Study Reveals Unexpected Way to Make Blood Vessels
Ashley Yeager | May 1, 2018
Researchers stumbled across the connection while searching for ways to reduce vision problems in people with achromatopsia.