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When immune cells become overactive, your immune system itself can cause disease. NIAID/Flickr

Immune health is all about balance – an immunologist explains why both too strong and too weak an immune response can lead to illness

Dietary supplements claim to be able to ‘boost your immune system’ to combat disease. But attaining immune balance through a healthy lifestyle and vaccination is a safer bet to keep in good health.
In the cult TV series ‘Supernatural,’ the car driven by the two protagonists is a star in its own right. Natasha Mikles

What a biannual gathering of 1967 Impalas reveals about the blurry line between fandom and religion

Since 2019, fans of the TV series ‘Supernatural’ have flocked to Austin, where their encounters with 1967 Impalas customized to mimic the one used in the show arouse elation, astonishment and tears.
Portland, Maine, officials ordered that a park be cleared on Sept. 28, 2022, of people who were homeless and that any trash be removed before a visit by a candidate for governor. AP Photo/Robert F. Bukaty

Being homeless means not being free − as Americans are supposed to be

To be homeless is a condition in which a person’s freedom is profoundly compromised. And that’s un-American, says a philosopher.
The sum is greater than the parts when researchers build an ensemble from multiple coordinated but independent models. Matteo Chinazzi

Pooling multiple models during COVID-19 pandemic provided more reliable projections about an uncertain future

Policymakers rely on models during uncertain times to figure out how their choices could affect the future. Over the pandemic, an ensemble of many COVID-19 models outperformed any one alone.
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.