On “LA Times Today,” they were some of the most entertaining kids on TV. But a new documentary shows what was going on behind the scenes at Nickelodeon was alarming and, in some cases, abusive.

Plus, more parents are delaying their kids’ vaccines, stirring deep concern among pediatricians.

Also, it’s one of our most precious resources. So why do we let so much water wash out to sea?

And finally, the wolverine disappeared from California a century ago. Are they ready to make their come back?