Abstract blue waveforms representing infrasound and ultrasound frequencies humans can't hear

Sounds You Can't Hear — But Still Affect You

Sounds humans can’t hear still shape mood and health. Explore infrasound and ultrasound, from elephants to bats and “space sounds.”
The Passetto di Borgo walkway linking the Vatican to Castel Sant’Angelo, a historic papal escape route.
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Close-up of a spiny, horned lizard, featuring a real animal behind dragon myths.
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Close-up of Welwitschia mirabilis, an iconic desert plant that survives extreme conditions.
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LEGO lunar module with two astronaut minifigures. illustrating the NASA and LEGO partnership
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Ornate silver-and-gold chalice with a communion host, symbolizing the legendary Holy Grail.
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Person mid-air in a controlled freefall, visualizing invisible forces in everyday life like gravity
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Teaching skeleton in classroom, illustrating the legitimate market for medical specimens.
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Long-exposure shot inside a glowing gold tunnel with motion blur, visualizing the gravity tunnel concept
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a bunch of flags hanging from a pole
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