There is nothing really to worry about Ebola unless you live in Africa, for now. But hey, when the population pushes 20 billion in the future, there may be a little something to worry about then.
As far as global warming goes, I enjoy the hysteria of it, it provides entertainment. Especially when I blow past a Prius or Volt with my loud V-8 powered exhaust, and to quote Jeremy Clarckson, they can hear me hurt the environment. I've actually had people come up to me in the parking lot at work and ask if I feel guilty about it. Was very hard not blow my coffee out of my nose laughing.