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Archive 2026-10

Biology

Aspen leaves retain chemical signs of past droughts

A three-year experiment suggests aspen trees may retain chemical traces of previous droughts in their leaves, according to University of Utah biologists. The findings appear to challenge the assumption that trees only record droughts in their growth rings.

1d ago

Tattoo inks switch color with light exposure
News

Tattoo inks switch color with light exposure

Researchers developed multicolored tattoo inks that change visibility when exposed to specific light wavelengths. The inks are activated by different light types, but safety and long-term effects remain untested.

1d ago · 2 outlets