The Supreme Court greenlights states’ efforts to block kids from online porn by requiring age verification. AP Photo/J. Scott Applewhite
Articles

Supreme Court upholds childproofing porn sites

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A satellite image from Aug. 13, 2024, shows an algal bloom covering approximately 320 square miles (830 square km) of Lake Erie. By Aug. 22, it had nearly doubled in size. NASA Earth Observatory
Blog

Toxic algae blooms are lasting longer in Lake Erie − why...

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New York mayoral candidate Zohran Mamdani speaks to supporters in Brooklyn on May 4, 2025. Madison Swart/Hans Lucas/AFP via Getty Images
Articles

How Zohran Mamdani’s win in the New York City mayoral primary...

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Chef Phila Lorn prepares a bowl of noodle soup at Mawn restaurant in Philadelphia. AP Photo/Matt Rourke
Business

Michelin Guide scrutiny could boost Philly tourism, but will it stifle...

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Yellowcake is a concentrated form of mined and processed uranium. Nuclear Regulatory Commission, CC BY
Education

Uranium enrichment: A chemist explains how the surprisingly common element is...

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American troops topple a statue of Saddam Hussein on April 9, 2003, in Baghdad. Gilles Bassignac/Gamma-Rapho via Getty Images
Diplomatic

Israel-Iran war recalls the 2003 US invasion of Iraq – a...

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Senate Majority Leader John Thune speaks with reporters about the reconciliation process to advance President Donald Trump’s spending and tax bill on June 3, 2025. AP Photo/J. Scott Applewhite
Business

What is reconciliation − the legislative shortcut Republicans are using to...

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The human element matters. Westend61/Getty Images
Business

Why power skills – formerly known as ‘soft skills’ – are...

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Neutrophils (yellow) eject a NET (green) to ensnare bacteria (purple). Other cells, such as red blood cells (orange), may also get trapped. CHDENK/Wikimedia Commons, CC BY-SA
Education

Mitochondria can sense bacteria and trigger your immune system to trap...

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