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Aerial view of native seedlings for forest restoration at the the Instituto Terra, Aimores, Brazil. Christian Ender/Getty Images

Arbor Day: Why planting trees isn’t enough

Large-scale tree-planting projects are politically popular and media-friendly, but without effective planning and long-term management, they can do more harm than good.
The FTC put companies that sell AI systems on notice: Cross the line with biased products and the law is coming for you. Maciej Frolow/Stone via Getty Images

FTC warns the AI industry: Don’t discriminate, or else

The Federal Trade Commission is rattling its saber at the technology industry over growing public concern about biased AI algorithms. Can the agency back up its threats?
A dose of the one-shot Johnson & Johnson COVID-19 vaccine is prepared at a vaccination event at Baldwin Hills Crenshaw Plaza in South Los Angeles on March 11, 2021. Mario Tama/Getty Images

Restart of the Johnson & Johnson COVID-19 vaccine: A doctor explains why benefits far outweigh risks

The CDC and FDA said the benefits of the Johnson & Johnson vaccine far outweigh the low risk of developing rare blood clots and lifted a pause on the vaccine’s use. A doctor explains.
Faster than light travel is the only way humans could ever get to other stars in a reasonable amount of time. Les Bossinas/NASA/Wikimedia Commons

Warp drives: Physicists give chances of faster-than-light space travel a boost

If humanity wants to travel between stars, people are going to need to travel faster than light. New research suggests that it might be possible to build warp drives and beat the galactic speed limit.
A tiger crosses a road in India’s Ranthambore National Park. Aditya Singh/AFP via Getty Images

GPS tracking could help tigers and traffic coexist in Asia

An infrastructure boom threatens endangered tigers across Asia. Scientists want to know more about how tigers behave near roads so they can design wildlife-friendly transportation networks.
Police arrest a protester at a Moscow rally in support of Russian dissident Alexei Navalny, who fell ill while in prison and is now hospitalized. Alexander Demianchuk\TASS via Getty Images

For Vladimir Putin and other autocrats, ruthlessly repressing the opposition is often a winning way to stay in power

There’s not much the world can do to stop authoritarian rulers from persecuting their political opponents, as shown by the standoff over Russian dissident Alexei Navalny, who is ill and imprisoned.
Si has experimentado un aumento o una pérdida de peso no deseados durante la pandemia, no estás solo. Karl Tapales/Moment via Getty Images

¿Aumento o pérdida de peso no deseado durante la pandemia? El estrés podría tener la culpa

El 42% de los estadounidenses encuestados para un estudio ganó peso no deseado en 2020, de media 13 kilos. Casi el 18% afirmó haber experimentado una pérdida de peso no deseada, una media de 12 kilos.
Medical workers hold signs during a rally in Central Park in New York City by White Coats for Black Lives after the death of George Floyd on May 25, 2020. Maria Khrenova/TASS via Getty Images

Declaring racism a public health crisis brings more attention to solving long-ignored racial gaps in health

Black Americans have worse health outcomes by many measures. To draw attention to that fact, the CDC and communities across the country have called racism a public health threat.