Blue and Green: The US president has officially signed a memorandum to expand a marine reserve in the Pacific Ocean, banning all kinds of commercial-scale activities such as fishing and mining, in order to create the largest network of protected oceanic space in the world.
Obama announced plans to expand the Pacific Remote Islands Marine National Monument in June, adding 782,000 square miles to the already existent 77,020 square miles, which hosts a unique ecosystem.
The memorandum bans commercial fishing,...