Intricate network of tree roots and moss on a forest hillside, showcasing nature's resilience.

Suzanne Simard sealed paper birch and Douglas fir seedlings inside plastic bags, fed them carbon-14 and carbon-13 dioxide, and nine days later found carbon had crossed between species through fungal threads in the British Columbia soil beneath her boots

Suzanne Simard’s 1997 forest experiment did not show trees whispering to each other. It showed something narrower, stranger, and easier to test: carbon that began in the air around a paper birch seedling later appeared inside a neighbouring Douglas fir, after passing through roots and fungal tissue in the soil. The field study, published in

Close-up of glowing jellyfish swimming gracefully in deep green ocean waters.

A species of jellyfish called Turritopsis dohrnii can revert its adult cells back to a juvenile polyp stage when injured or starving, effectively restarting its life cycle, and biologists have so far failed to identify any natural limit to how many times it can do this.

The tiny jellyfish Turritopsis dohrnii can reorganise its adult cells back into a juvenile polyp when stressed, restarting its life cycle indefinitely. Biologists have observed more than ten reversals in a single animal and have yet to find any limit.

Explore the historic Roman bridge in lush Salamanca, Spain captured beautifully in daylight.

The Roman aqueduct at Segovia, built around the first century AD without mortar, still carried water into the 1970s, its 167 granite arches held together by nothing but the precise weight distribution of stones cut to fit each other within fractions of a millimeter.

The Aqueduct of Segovia delivered drinking water to a Spanish city for nearly nineteen centuries using nothing but precisely cut granite blocks held in place by their own weight. It was finally retired in 1973 — not because it failed, but because car exhaust was eating the stone.

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