Mediterranean Sea factors. The opening of the Suez Canal in 1869 created the first salt-water passage between the Mediterranean and Red Sea. The Red Sea 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 hyper-saline 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 equalised with that of the Red Sea, the barrier to migration was removed, and plants and animals from the Red
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