What are microcredentials? And are they worth having?

As private firms and governments struggle to fill jobs—and with the cost of college too high for many students—employers and elected officials are searching for alternative ways for people to get good jobs without having ...

Study shows how to improve management of municipal solid waste

Some 20,000 metric tons of municipal solid waste (MSW) are produced every day in metropolitan São Paulo (Brazil), with household trash accounting for 12,000 tons and street cleaning (mainly sweeping, open-air market refuse ...

Fairy circles: Plant water stress causes Namibia's gaps in grass

Namibia's legendary fairy circles are mysterious, circular, bald patches in the dry grasslands on the edge of the Namib Desert. Their formation has been researched for decades and has recently been the subject of much debate. ...

Spectroscopy and theory shed light on excitons in semiconductors

From solar panels on our roofs to the new OLED TV screens, many everyday electronic devices simply wouldn't work without the interaction between light and the materials that make up semiconductors. A new category of semiconductors ...

Could Earth life survive on a red dwarf planet?

Even though exoplanet science has advanced significantly in the last decade or two, we're still in an unfortunate situation. Scientists can only make educated guesses about which exoplanets may be habitable. Even the closest ...

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