SF has declared an emergency due to the coastal erosion happening at Sloat blvd. and the Great Highway. If you enjoy the beach, and give a rats ass about our local government making sound, sustainable, policy in regards to our environment then you may want to read this and sign the petition!
One solution to this erosion, which has been used previously up and down the california coastline is to “armor” the coast with rip-rap (lg boulders) or sea walls. Both of which have been proven to be effective in the short term. These “solutions” also have been proven to simply relocate the problem, up or down the coast. E.g. putting rip-rap at Sloat will simply accelerate erosion of the beach, north and south.