This ancient arthropod blood has saved your life
Pop quiz: what is bright blue, has barely changed in the past 450 million years, and sells for $15,000 per liter? Answer: horseshoe crab blood, which is used to make sure injected drugs aren't contaminated with bacteria. Hank Green explains below. So cool! --Ryan Cooper
The Week
Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.
Sign up for The Week's Free Newsletters
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
-
What have Trump’s Mar-a-Lago summits achieved?Today’s big question Zelenskyy and Netanyahu meet the president in his Palm Beach ‘Winter White House’
-
The most anticipated movies of 2026The Week Recommends If the trailers are anything to go by, film buffs are in for a treat
-
The biggest viral moments of 2025In the Spotlight From the Coldplay concert kiss cam to a celebrity space mission, these are some of the craziest, and most unexpected, things to happen this year
-
Son arrested over killing of Rob and Michele ReinerSpeed Read Nick, the 32-year-old son of Hollywood director Rob Reiner, has been booked for the murder of his parents
-
Rob Reiner, wife dead in ‘apparent homicide’speed read The Reiners, found in their Los Angeles home, ‘had injuries consistent with being stabbed’
-
Hungary’s Krasznahorkai wins Nobel for literatureSpeed Read László Krasznahorkai is the author of acclaimed novels like ‘The Melancholy of Resistance’ and ‘Satantango’
-
Primatologist Jane Goodall dies at 91Speed Read She rose to fame following her groundbreaking field research with chimpanzees
-
Florida erases rainbow crosswalk at Pulse nightclubSpeed Read The colorful crosswalk was outside the former LGBTQ nightclub where 49 people were killed in a 2016 shooting
-
Trump says Smithsonian too focused on slavery's illsSpeed Read The president would prefer the museum to highlight 'success,' 'brightness' and 'the future'
-
Trump to host Kennedy Honors for Kiss, StalloneSpeed Read Actor Sylvester Stallone and the glam-rock band Kiss were among those named as this year's inductees
-
White House seeks to bend Smithsonian to Trump's viewSpeed Read The Smithsonian Institution's 21 museums are under review to ensure their content aligns with the president's interpretation of American history
