News
- Health & Medicine
Immune cells show long-term memory
Survivors of the 1918 Spanish flu pandemic still make antibodies against the virus, revealing a long-lived immunity previously thought impossible.
- Space
The great planet debate
New suggestions for defining a planet would put Pluto back on the list. Scientists discuss the International Astronomical Union’s definition during the Great Planet Debate Conference.
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- Physics
Stars ablaze in other skies
A new study suggests that a surprising number of universes, even those with laws of physics different from those in our universe, can still support stars.
