When your immune system is exposed to a vaccine, an allergen, or an infectious microbe, subsets of T cells that can recognize a foreign intruder leap into action.
Technique Identifies T Cells Primed for Certain Allergies or Infections
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Climate May Have Helped Crumble One of the Ancient World’s Most Powerful Civilizations
New research suggests it was climate-related drought that built the foundation for the collapse of the Assyrian Empire (whose heartland was based in today’s northern Iraq)—one of the most powerful civilizations in the ancient world.
Biologists Build Proteins That Avoid Crosstalk with Existing Molecules
Inside a living cell, many important messages are communicated via interactions between proteins.
World Scientists Declare Climate Emergency, Establish Global Indicators for Effective Action
A global coalition of scientists led by William J. Ripple and Christopher Wolf of Oregon State University says “untold human suffering” is unavoidable without deep and lasting shifts in human activities that contribute to greenhouse gas emissions and other factors related to climate change.
NASA Sees Tropical Cyclone Olga Merge with a Cold Front
Tropical Depression 17 strengthened briefly into a tropical storm on the same day it formed, Oct. 25. NASA’s Terra satellite captured a look at the clouds associated with its remnants merging with a cold front over the southern U.S.
A 2-Million-Year-Old Ice Core from Antarctica Reveals Ancient Climate Clues
Analyzing the oldest ice core ever retrieved in Antarctica, U.S. scientists have shown a correlation between atmospheric carbon dioxide levels and temperature as far back as 2 million years.
