Get Instant Summarized Text (Gist) Some baleen whale species sing at frequencies below 100 hertz, making their calls undetectable to killer whales, which cannot hear such low frequencies. These ...

Some baleen whales, or whales that have plates in their mouths to help sieve out plankton, sing low-frequency songs to not only attract potential mates but also keep them safe from killer whale ...

It's natural to want white teeth, but professional teeth whitening can be expensive. If you desire a brighter smile but don't want the hefty dentist bill that comes with it, consider at-home ...

Feb. 3, 2025 — Long-term exposure to PM2.5, PM10, NO2 and ozone (O3) air pollution is associated with more hospital admissions for lower respiratory tract infections in ...

Feb. 6, 2025 — New research finds some baleen whale species call at such deep frequencies that they're completely undetectable by killer whales, which cannot hear ... Feb. 6, 2025 — Scientists ...

A biological anthropologist at the University of Coimbra in Portugal is hypothesizing that the mysterious flat patches found on the sides of teeth in ancient Europeans may have been due to the ...

Had a mechanical engineer designed the human frame, he would no doubt have built the jaws after the fashion of a nut cracker, with the muscles placed at the ends of the jaw levers, and the teeth ...

Killer whales are the only natural predator of baleen whales — those that have "baleen" in their mouths to sieve their plankton diet from the water. More solitary than toothed whales, baleen whales ...

Beneath the surface, marine life relies on calls, clicks, and songs to navigate, communicate, and survive. For baleen whales, singing songs is essential, but it also comes with risks. Killer whales, ...