Chinampas were fixed raised wetland fields with canal irrigation, and complex rotations could yield up to seven harvests a year
Jul 14, 2026
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Earth & Environment
Climate, energy, ecology, and the systems that keep the planet running.
A flame has burned inside a grotto behind a waterfall near Buffalo for generations, through rain and snow, and when geologists finally…
Jul 14, 2026
The longest mountain range on Earth is almost entirely underwater
Jul 13, 2026
Beneath kilometres of Antarctic ice sits a lake the size of a small sea, sealed off from the sky for millions of years and possibly still…
Jul 13, 2026
The Late Ordovician extinction 443 million years ago struck in two pulses driven by opposite climate extremes
Jul 13, 2026
A high-altitude Pyrenees cave records recurrent use from the early fifth millennium BC, including 23 hearths and probably malachite…
Jul 13, 2026
About 60 wild Wollemi pines survive in closely guarded canyon sites after the species was rediscovered in 1994
Jul 13, 2026
Roughly five and a half million years ago the Mediterranean dried up almost entirely, and when the Atlantic finally broke back through at…
Jul 12, 2026
Nearly three kilometres beneath a Canadian mine, geologists found water that may have been isolated in the rock for roughly two billion…
Jul 12, 2026
Iceland's Hallgrímskirkja church took 41 years to build and was designed to echo the basalt lava columns that cool into hexagonal pillars…
Jul 11, 2026
In 1971, Apollo 14 astronaut Stuart Roosa carried hundreds of tree seeds around the Moon in his personal kit, and the ordinary-looking…
Jul 11, 2026
Mauna Kea rises more than 10,200 metres from its submarine base, taller base-to-summit than Everest’s elevation above sea level
Jul 10, 2026