An orange clownfish, Amphiprion percula, lives in symbiosis with a host anemone on the Great Barrier Reef. Alejandro Usobiaga/Scientific Reports hide caption

The Two-Way
Must Reads
Thursday
Locals have been tweeting photos of fire ant colonies drifting aimlessly in the floodwaters of Hurricane Harvey. Juan DeLeon/Icon Sportswire/Getty Images hide caption
Tuesday
Bernard Pomerance, playwright of "The Elephant Man," in New York in 1979, the year the play debuted. David LeShay/AP hide caption
Sunday
Tobe Hooper arrives at the premiere of New Line's Texas Chain Saw Massacre: The Beginning at Grauman's Chinese Theatre in 2006 in Los Angeles, Calif. Michael Buckner/Getty Images hide caption
Friday
A photo provided by the AIDS Law Project of Pennsylvania shows an Aetna mailer in which a reference to HIV medication is partly visible though the envelope window. AIDS Law Project of Pennsylvania hide caption
Wednesday
Ten years ago today Chris Messina posted the first hashtag on Twitter: How do you feel about using # (pound) for groups. As in #barcamp [msg]? Bethany Clarke/Getty Images hide caption
Tuesday
The new pound coin inspired the funniest joke of the Edinburgh Fringe Festival in Edinburgh, Scotland, this year. Matt Cardy/Getty Images hide caption
Monday
Brothers Chris and Gabe Fabiano watch the solar eclipse on Hilton Head Island, S.C. Win McNamee/Getty Images hide caption
Thursday
Single malt Scotch whisky, produced at the Auchentoshan distillery near Glasgow, Scotland, could benefit from a little water, a new paper suggests. Andy Buchanan/AFP/Getty Images hide caption
Wednesday
Neza Pintaric, 9 and sister Ula, 11, right, from Slovenia watch the partial eclipse of the sun through solar glasses in Hyde Park in central London, Friday August 1, 2008. Joel Ryan/AP hide caption
Monday
The 106-year-old fruitcake is "well-preserved," and is believed to have been taken to Antarctica with the Robert F. Scott expedition. Antarctica Heritage Trust hide caption
The Daily Stormer site had a story that claimed to be written by hackers and gave the site 24 hours before it would be deleted — the same deadline set by GoDaddy. Screenshot by NPR hide caption
On Nov. 13, 2012, a narrow corridor in the southern hemisphere experienced a total solar eclipse. The corridor lay mostly over the ocean but also cut across the northern tip of Australia where both professional and amateur astronomers gathered to watch. Romeo Durscher/NASA Goddard Space Center/Flickr hide caption
Thursday
Ruth Pfau, seen here at St. Patrick's Cathedral in Karachi in 2010, led a charity fighting leprosy and blindness in the country for decades. Asif Hassan/AFP/Getty Images hide caption
Wednesday
In a 30-second exposure, a meteor streaks across the sky during the annual Perseid meteor shower last year in Spruce Knob, W. Va. Bill Ingalls/AP hide caption