The Energy Department announced on Monday that it was starting an “Earthshots” initiative to reduce the costs of clean energy within a decade — starting with its first goal of reducing the cost of clean hydrogen to $1 per kilogram. The Energy Earthshots Initiative will seek to, within a decade, speed up breakthroughs in affordable and reliable clean energy, according to a department statement. “The Energy Earthshots are an all-hands-on-deck call for innovation, collaboration and acceleration of our clean energy economy by tackling the toughest remaining barriers to quickly deploy emerging clean energy technologies at scale,” Energy Secretary Jennifer Granholm...