Applegate revealed that despite the misdiagnosis, she still has "every symptom of someone with MS," adding, "I still have to use wheelchairs when I go to the doctor's office. I can't walk from the car to the room."

In the years after the 2010 BP oil spill, the number of fish in the deeper parts of the Gulf of Mexico dramatically declined.

Electric aviation is still in the very early stages of its development. But a number of companies are moving forward with more ambitious plans. In contrast to its approach with other forms of electric transportation, the Trump administration seems willing to embrace a bigger rollout. Aviation correspondent Miles O'Brien reports on the promise and the challenges of the budding industry.