George "Chip" Greenidge Jr. says his CNN Fit Nation teammates have inspired him and kept him on track.

Fit Nation: Learning to climb uphill

“Climbing mountains on Sunday morning — you got to be kidding me,” I exclaimed. But it was all part of the process I realized I was going t…

Ebola Troops Come Home

Ebola troops come home

Special military unit returns to Maryland after working to stop the Ebola outbreak in Liberia.