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Two crystalline materials together: kyanite (blue) embedded in quartz (white). Photo 12/Universal Images Group via Getty Images

How do crystals form?

There are a lot of myths about crystals − for example, that they are magical rocks with healing powers. An earth scientist explains some of their amazing true science.
In small-group, subsistence living, it makes sense for everyone to do lots of jobs. gorodenkoff/iStock via Getty Images Plus

Forget ‘Man the Hunter’ – physiological and archaeological evidence rewrites assumptions about a gendered division of labor in prehistoric times

Female bodies have an advantage in endurance ability that means Paleolithic women likely hunted game, not just gathered plants. The story is written in living and ancient human bodies.
The North Carolina memorial stands in Gettysburg National Military Park on Aug. 10, 2020. Bill Clark/CQ-Roll Call, Inc via Getty Images

Gettysburg tells the story of more than a battle − the military park shows what national ‘reconciliation’ looked like for decades after the Civil War

How should opposing armies be commemorated on a battlefield? Gettysburg offers an especially interesting example of today’s debates over Confederate monuments.
The Teo Kali, an Aztec cultural group, participates in a sunrise “Unthanksgiving Day” ceremony with Native Americans on Nov. 24, 2005, on Alcatraz Island. Kara Andrade/AFP via Getty Images

Unthanksgiving Day: A celebration of Indigenous resistance to colonialism, held yearly at Alcatraz

The origins of the Indigenous People’s Thanksgiving Sunrise Ceremony, held on the traditional lands of the Ohlone people, go back to 1969, a pivotal moment of Indigenous activism.
The exterior of Shifa hospital in Gaza City is seen on Nov. 10, 2023, amid ongoing battles between Israel and Hamas near the facility. AFP via Getty Images

Hamas isn’t the first military group to hide behind civilians as a way to wage war

The Taliban and the Islamic State group are among the militant groups that have been known to use civilians as human shields in the past, in order to try to shift their opponents’ war calculations.
This is the second FDA alert this year on contaminated eye drops. eternalcreative/iStock via Getty Images Plus

FDA’s latest warnings about eye drop contamination put consumers on edge − a team of infectious disease experts explain the risks

A bacterial contamination of the work environment at facilities that produce eye drops can lead to severe infections and even death, as was the case earlier in 2023.
A row of monopiles that will be the base for offshore wind turbines, in the Atlantic Ocean off the coast of Martha’s Vineyard, Mass. David L Ryan/The Boston Globe via Getty Images

As the US begins to build offshore wind farms, scientists say many questions remain about impacts on the oceans and marine life

A recent study focusing on how offshore wind farms in Massachusetts waters could affect endangered right whales does not call for slowing the projects, but says monitoring will be critical.
Little to no attention has been given to the father’s potential contribution to fetal alcohol syndrome disorders. Katleho Seisa/E+ via Getty Images

For decades, mothers have borne the brunt of scrutiny for alcohol use during pregnancy − new research points to dad’s drinking as a significant factor in fetal alcohol syndrome

Public health messaging has focused on the drinking habits of the mother during pregnancy. But a growing body of research shows that what dad is drinking before pregnancy matters too.