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U.K. politician Winston Churchill with U.S. President Harry Truman on March 3, 1946, leaving for Missouri, where Churchill would make a speech warning about the dangers of the Iron Curtain. Hulton-Deutsch Collection/CORBIS/Corbis via Getty Images

Biden’s plain speaking on Ukraine inspires support without sparking a wider war – an echo of the Truman Doctrine, 75 years ago

The way two presidents used language to ask Americans to support intervening in a foreign conflict shows the power of a leader who uses plain speaking – and sets limits on intervention.
El sentido del olfato de un perro es al menos 1.000 veces más sensible que cualquier dispositivo mecánico. Le están entrenando a Moose, un perro de Nebrasks, para detectar ciertas aromas. Bill Cotton/Colorado State University

El olor de la enfermedad: El uso de perros, ratones y hurones para detectar padecimientos

Los científicos están experimentando con el uso de perros para oler a las personas infectadas con COVID-19. Pero los perros no son los únicos animales con olfato que detecta a las enfermedades.
The SEC’s proposed rules include some reporting of so-called Scope 3 emissions, in companies’ supply chains and use of their products. AP Photo/Noah Berger

SEC proposes far-reaching climate disclosure rules for companies – here’s where the rules may be vulnerable to legal challenges

The SEC’s proposal would require companies to disclose their greenhouse gas emissions and other climate risks, but it’s not a done deal yet.
Slovenia Prime Minister Janez Jansa (left), Czech Republic Prime Minister Petr Fiala (second from left) and Poland Prime Minister Mateusz Morawiecki (third from left) meet with Ukrainian President Volodymyr Zelenskyy during a visit to Kyiv on behalf of the European Council on March 16, 2022. Ukrainian Presidency/Handout/Anadolu Agency via Getty Images

Defending Europe: How cultural identity shapes support for Ukraine and armed resistance against Russia

The Russian invasion has triggered an outpouring of support for Ukraine from European countries. Will Putin’s gamble backfire and ultimately push Ukraine firmly into the European fold?
Telling elders scary stories about online scammers is not the best way to keep them safe. Olga Gavrilenko/EyeEm via Getty Images

Older Americans are given the wrong idea about online safety – here’s how to help them help themselves

Older Americans are often taught to be fearful of hackers and scammers in their midst while also being told to investigate potential threats. Better advice is to not engage.
Removing ultrasound and pelvic exam requirements for medication abortion could help expand access to care. Oleg Rebrik/iStock via Getty Images Plus

Abortion pills are safe to prescribe without in-person exams, new research finds

During the pandemic, health care providers began prescribing abortion pills without requiring in-person exams. This practice could help people access the care they need when abortion rights are in limbo.
A pilot plant near the Salton Sea in California pairs lithium extraction with geothermal energy production. Michael McKibben

How a few geothermal plants could solve America’s lithium supply crunch and boost the EV battery industry

Lithium is essential for batteries that power electric vehicles and store energy from solar and wind farms. A new U.S. source could provide 10 times more lithium than the country uses today.
Smith & Wesson handguns on display at the Shooting, Hunting and Outdoor Trade Show in Las Vegas, Jan. 19, 2016. AP Photo/John Locher

Fewer Americans are hunting, and that raises hard questions about funding conservation through gun sales

Every gun and bullet sold in the U.S. generates excise taxes to support conservation. But Americans are buying guns now for different reasons than in the past – and increasingly, not for hunting.