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Your teeth will be better off if you refrain from chomping on ice cubes. Credit: Laurence Monneret/The Image Bank via Getty Images

Is chewing on ice cubes bad for your teeth?

A dentist explains why this is a habit worth breaking – no matter the cause or the strength of your cravings to keep doing it.
Teachers experienced more positive emotions interacting with their students when schools closed during the pandemic. Barrie Fanton/Education Images/Universal Images Group via Getty Images

Teachers say working with students kept them motivated at the start of the pandemic

Teachers’ fondness for working with students grew in the early stages of the pandemic, according to a new study that provides a unique before-and-after glimpse at what duties teachers enjoyed most.
Tiny changes, like a butterfly’s wing flapping, can be amplified downstream in a chaotic system. Catherine Falls Commercial/Moment via Getty Images

What is chaos? A complex systems scientist explains

Part of the 2021 Nobel Prize in Physics was awarded for work modeling Earth’s climate using its chaotic, complex weather. To scientists, chaos lies in the gray zone between randomness and predictability.
Nearly 100 scholars and health care professionals are urging women to limit their use of acetaminophen during pregnancy. Oscar Wong/Moment via Getty Images

Tylenol could be risky for pregnant women – a new review of 25 years of research finds acetaminophen may contribute to ADHD and other developmental disorders in children

Tylenol has long been considered a go-to medication for low to moderate pain and for fever reduction, even during pregnancy. But mounting evidence suggests that it is unsafe for fetal development.
The estimated lifetime costs of antiretroviral therapy for someone who acquires HIV at age 35 is $358,380. YakubovAlim/iStock via Getty Images Plus

Combining an HIV vaccine with immunotherapy may reduce the need for daily medication

People with HIV need to take daily medication to keep the virus at bay. A study has found that a new treatment combination could boost immunity and control virus levels even after stopping medication.
Several lawmakers from high-tax states like New York are pushing for changes to a key tax deduction in Democrats’ $3.5 trillion spending package. Kent Nishimura/Los Angeles Times via Getty Images

Some rich people will love at least one sweetener in Democrats’ $3.5 trillion plan

The 2017 tax cuts put a $10,000 cap on the deduction for state and local taxes. The richest households would see the biggest gains from eliminating or raising the cap.
Some preschoolers are encouraged to bring in their favorite toy or stuffed animal, while others risk having it confiscated. Layland Masuda/Moment Collection via Getty Images

Rich kids and poor kids face different rules when it comes to bringing personal items to school

When students are allowed to bring personal items for show and tell, it can build their senses of self-worth, belonging and control. But poor kids often don’t get that opportunity.

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