An Open Letter to President-Elect Trump about Nuclear Weapons and Nuclear Winter

Paris, Nuclear Weapons, and Suicide Bombing

A Modest Proposal

Nuclear Weapons Are Much More Dangerous Than Global Warming

Nuclear Energy Is Not a Solution for Global Warming

A Case Against Climate Engineering

Ukraine and Nuclear Weapons

President Obama Must Say “No” to Keystone XL Pipeline

Human Tipping Points: Why I’m Optimistic About Solutions to Global Warming and Nuclear Winter

Ban Nuclear Weapons; Saving Money and Saving the World