A device called the 'kelp elevator' tested on the Southern California coast grows energy-rich algae four times faster than nature, proving the potential for mass-produced seaweed to power vehicles with biofuel harvested from the ocean.

If it's so profitable to grow seaweed as biofuel, there's nothing to stop you from doing so.

Why do I even bother anyway here it is...
A new report exhaustively chronicles the local resistance to renewable energy at play in the U.S. The report, published this week by the Sabin Center for Climate Change Law at Columbia University, finds at least 100 ordinances have been passed in 31 states that block or constrict construction of new renewable energy facilities. Meanwhile, least 152 proposed projects in 48 states have been opposed or contested by local groups. At a time when the U.S. needs to be stepping up renewables installation, these laws are slowing the transition. https://earther.gizmodo.com/the-wild-ways-local-governments-are-blocking-renewable-1846355479

/r/science Thread Parent Link - eurekalert.org