Giant sinkhole with a forest inside found in China

Good News Notes: “A team of Chinese scientists has discovered a giant new sinkhole with a forest at its bottom.  The sinkhole is 630 feet (192 meters) deep, according to the Xinhua news agency, deep enough to just swallow St. Louis’ Gateway Arch. A team of speleologists and spelunkers rappelled into the sinkhole on Friday (May…