After participants at the "Unleash the Power Within" self-help seminar walked over almost 10 feet of hot coals, more than 20 people had to seek medical treatment.

ThinkStock/Hemera

OOD DAY FOR:

Adorably helping the adorable
A 2-year-old helps to save a baby sloth's life by giving her teddybear to the sloth, who wouldn't feed without holding onto a toy that approximated its mother. [The Stir]

Defying genetics
Bioengineers use rat cells to create an artificial jellyfish that swims and pulsates just like the real thing. [Death & Taxes]

Shopping around
A woman buys an abstract painting for $10 at Goodwill, and later discovers that the work is by well-established painter Ilya Bolotowsky and could fetch up to $20,000 at auction. [Newser]

BAD DAY FOR:

Horny Olympic fans
Grindr, the location-based gay-hookup app, crashes after an influx of new users in the London area overwhelms its servers. [HyperVocal]

Respecting one's elders
Three-year-old Tripp Palin calls his aunt Willow a "faggot" on Bristol Palin's reality show. [New York]

Inspirational moments
At least 21 people suffer burns, many of which were second- and third-degree, after walking on hot coals during a motivational speaker convention. [Slate]

For more winners and losers see: Good day, bad day: July 20, 2012