Doctors who extracted the teeth claimed that radiation from mobile towers, as well as genetics, may have played a role in causing the growth. But there's good reason to be skeptical.
The cloud held up to 100 times the level of radiation released after the Fukushima accident in Japan in 2011.
By grafting their roots together in a hidden underground network, trees could be forming giant "superorganisms" that span entire forests.
What started as an internet joke has generated a stern military warning after more than a million people "signed up" to "raid" Area 51.
More than 200,000 Facebook users say they're interested in joining a raid on Nevada's infamous Area 51 air base this summer.
Scavengers can make millions of dollars by selling the scrap metal from old shipwrecks — no matter how many human remains are desecrated in the process.
Tiny ripples called magnons could lure even a fleeting, lightweight dark matter particle out of hiding.