Original sentence: Current nuclear reactors return around 40-60 times the invested energy when using life cycle analysis if one discounts the energy used to secure, defend and maintain the stored nuclear waste for millions of years as well as the energy needed to hospitalise entire regions in the event of a mishap.Some believe this improves upon coal, natural gas, and current renewables except hydropower
Edited sentence: Current nuclear reactors return around 40-60 times the invested energy when using life cycle analysis.This is better than coal, natural gas, and current renewables except hydropower