The Fukushima Daiichi Nuclear Power Plant was severely damaged

The Fukushima Daiichi Nuclear Power Plant was severely damaged due to a magnitude 9.03 earthquake and tsunami in March, 2011. Radiation exceeding government-recommended safety limits was subsequently found nearby in drinking water, in milk from farms 30 miles away, and in produce from farms more than 100 miles from the plant. Assume that the nuclear plant leaked radiation consisting primarily of radioactive cesium 137 (half life 30 years), strontium 90 (half life 29 years), iodine 129 (half life 15.7 million years), iodine 131 (half life 8 days) and plutonium-239 (half-life 24,100 years). What will be the short-term and long-term environmental and health impacts of the incident? Are the the benefits of nuclear power stations worth the risks of radioactive contamination?