The city has deployed a system of sensors to flag highly polluting vehicles. Nearly all of them have been repaired, helping to clean Hong Kong’s air. Learn more about your ad choices. Visit megaphone.fm/adchoices

In Rockport, Me., an array of nearly 11,000 solar panels will soon begin a solar harvest as the sweet berries growing below them ripen on the bush. Learn more about your ad choices. Visit megaphone.fm/adchoices

Today we bring you a new episode in our podcast series COVID, Quickly. Every two weeks, Scientific American’s senior health editors Tanya Lewis and Josh Fischman catch you up on the essential developments in the pandemic: from vaccines to new variants and everything in between. You can listen to all past episodes here. Learn more about your ad choices. Visit megaphone.fm/adchoices

The small rodents are one of the few known monogamists in the wild—and their faithfulness was put to the test in a lab. Learn more about your ad choices. Visit megaphone.fm/adchoices

Equally surprising is the fact that we still do not know how birds actually stay airborne. Learn more about your ad choices. Visit megaphone.fm/adchoices

Today we bring you a new episode in our podcast series COVID, Quickly. Every two weeks, Scientific American’s senior health editors Tanya Lewis and Josh Fischman catch you up on the essential developments in the pandemic: from vaccines to new variants and everything in between. You can listen to all past episodes here. Learn more about your ad choices. Visit megaphone.fm/adchoices

What shape do you see when you hear “bouba”? What about “kiki”? It turns out that nonsense words that evoke certain shapes have something to say about the origins of language. Learn more about your ad choices. Visit megaphone.fm/adchoices

Using a combination of fishing data and satellite tracking, scientists found that the sharks have shifted their range some 250 miles poleward over the past 40 years.  Learn more about your ad choices. Visit megaphone.fm/adchoices

Harnessing the wind to blow back emissions is not without its own impacts, so researchers are developing technologies to coexist with whales and other ocean-dwelling species. Learn more about your ad choices. Visit megaphone.fm/adchoices

Today we bring you a new episode in our podcast series COVID, Quickly. Every two weeks, Scientific American’s senior health editors Tanya Lewis and Josh Fischman catch you up on the essential developments in the pandemic: from vaccines to new variants and everything in between. You can listen to all past episodes here. Learn more about your ad choices. Visit megaphone.fm/adchoices