What Is Tear Gas?
The term 'tear gas' refers to a group of chemical irritants that can be used to control or disperse crowds.
Latest in Science
Wuhan’s Lockdown Cut Air Pollution by Up to 63%
A policy as stringent as a lockdown has far-reaching implications that extend well beyond the intended purpose of disease control.
Did Trump Try to Poach Coronavirus Vaccine from Germany?
Confusing and unsubstantiated reports said the United States offered large sums of money to secure a COVID-19 vaccine for exclusive U.S. use.
No Evidence ‘Global Warming’ Was Rebranded as ‘Climate Change’
Climate change deniers are often known to misrepresent innocuous facts and use those misrepresentations to their advantage.
Evolution: That Famous ‘March of Progress’ Image Is Just Wrong
Many successful branches of the tree of life have stayed simple, such as bacteria, or have reduced their complexity, such as parasites.
The Five Pillars of Climate Change Denial
The fossil fuel industry, political lobbyists, media moguls and individuals have spent the past 30 years sowing doubt about the reality of climate change -- where none exists.
Why California Is Banning Chlorpyrifos, A Widely-Used Pesticide
After 2020, California growers will be barred from using the insecticide chlorpyrifos on grapes and other crops.
Why Are There Seven Days in a Week?
The number seven is not especially well-suited to coincide with the solar year.
Buyers Should Beware of Organic Labels on Nonfood Products
Product labels offer valuable information to consumers, but manufacturers can misuse them to increase profits. This is particularly true for the USDA's organic label.
Winter Solstice: The Astronomy of Christmas
From the Neolithic to present times, the amount of sunlight we see in a day has had a profound impact on human culture.
Can Astronomy Explain the Biblical Star of Bethlehem?
What was the celestial body the three wise men followed 2,000 years ago?
Jupiter’s Great Red Spot Is Not in Danger of Disappearing
Reports of its death are greatly exaggerated, or at least premature.
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No, Ghislaine Maxwell Has Not Tested Positive for COVID-19 in Jail
A routine review of content labeled satire.
Does a New Facebook Algorithm Only Show You 26 Friends?
Facebook hasn't limited your feed to only a certain number of people, and sharing a post saying otherwise won't make any difference.
Did Melania Trump’s Dress Feature Drawings by Victims of Sexual Abuse?
First lady Melania Trump wore an Alexander McQueen dress to a Fourth of July event.
Did Trump Say Operation Desert Storm Took Place in Vietnam?
The president's 2020 Independence Day address wasn't the smoothest of speeches, but neither was it as historically challenged as claimed by some critics.
Are These Images of Donald Trump and Ghislaine Maxwell Real?
Socialite Ghislaine Maxwell was arrested on sex abuse charges connected to convicted pedophile Jeffrey Epstein.