Levantine Sea to be the oldest known ocean crust worldwide. The Suez Canal was completed in 1869, linking the Levantine Sea to the Red Sea. The Red Sea's level is higher than the Eastern Mediterranean, so the canal serves as a tidal strait that pours Red Sea water into the Mediterranean. The Bitter Lakes, which are hypersaline natural lakes that form part of the canal, blocked the migration of Red Sea species into the Mediterranean for many decades, but as the salinity of the lakes gradually equalized with that of the Red Sea, the barrier to migration was removed, and plants and
Vermont 100 Mile Endurance Run Vermont 100 Mile Endurance Run The Vermont 100 Mile Endurance Run ("Vermont 100") is a 100-mile (162 km) long ultramarathon held annually in July at Silver Hill Meadow in West Windsor, Vermont. It is one of the five 100 mile races that comprise the Grand Slam of Ultrarunning. It is also the only known ultra race in the USA where entrants run alongside horses over a similar course, in a separate but simultaneous race. (Horses avoid some of the more treacherous single-track and technical trails.) The race has been held every year since 1989. The majority of the course runs