Perf Science: On Wednesday, hundreds of protesters who are against the construction of a giant telescope on Mauna Kea prevented workers from reaching the site. The planned $1.4 billion Thirty Meter Telescope (TNT) was under fire by many native Hawaiians. The protesters marched to turn over the project as they consider the mountain sacred. In April, the construction halted for about two months after 31 protesters were arrested. A dozen of protestors arrested Wednesday for obstructing were released after posting...