We take a probiotic containing soil based organisms in our family even though we are fortunate to enjoy good digestive health. (thehealthyhomeeconomist.com)
The distance of earth from the sun, and the composition of elements allowed merely for carbon based organisms, but this in no way discounts other life based on a different element. (religion.blogs.cnn.com)
That could cause huge climate swings, making it hard for life to survive, especially large, land - based organisms like us. (newscientist.com)