Someone recently told me about this phenomenon that's going on in the ocean. It involves a large "dead zone" where marine life is dying. There's a large area in the Gulf of Mexico off the coast of Florida.
I don't know what the cause is; some claim it's from pollution, but possibly it's part of the cycle of nature. Another possibility is warming of the ocean. Recently I was reading an interesting theory about that, namely, that underwater volcanic activity is responsible for warming the ocean. Well, last year's tsunami certainly showed that there's volcanic activity in the ocean.
Despite all our technological achievements, when it comes to nature, there are forces that we can't control. Ultimately God is in control.