A close look at the brains of 40 U.S. Embassy workers who developed mysterious symptoms in Cuba has found no evidence of injury. The State Department has said the employees were hurt by some sort of attack, in what became known as "Havana syndrome."

A few years ago, Jason Carney came across a statistic that took him by surprise.

In its 2015 survey of jobs in the solar industry, the nonprofit Solar Foundation reported that 0.0% of solar workers in the state of Tennessee were black or African American.

That number caught Carney's eye because the Nashville native is African American — and was working there as a solar installer in 2015. In fact, he was starting to design a solar array for his own home in north Nashville. Clearly, there had been an undercount.

Gelato served at Cremedoce De Fronteira is supposed to taste good. And do good.

The gelato shop, which has been scooping up a menu of flavors, including coconut, banana and papaya since its opening in late April, stands out in the town of Ressano Garcia, Mozambique.

It's only 60 miles from the capital Maputo, where there are several eateries with Italian-style ice cream. But this village of about 10,000 people, many of whom live in mud huts, isn't exactly known for its trendy restaurants.

It's not easy to see the orange and black spotted regal fritillary butterfly if you live in the Eastern U.S. It used to be common across much of the country, and is still found in the Midwest. But it's all but disappeared in the East, its once vast habitat developed, divided and degraded.

A 2007 federal report found that this now rare butterfly's "decline in the East was so rapid that in many states the regal fritillary had disappeared before it could be listed" as endangered.