Ola Electric is offering upgrades to the buyers of its standard S1 electric scooter for free. So, if you bought an S1 in India, you are eligible for an upgrade to the top end, S1 Pro model, but with ...

SAN JUAN, Puerto Rico — Ernesto strengthened into a hurricane Wednesday as it dropped torrential rain on Puerto Rico and left nearly half of all clients in the U.S. territory without power as it ...

S1 is the first heart sound that doctors can hear using a stethoscope. The vibrations that occur when the mitral and tricuspid valves in the heart close produce the S1 sound. There are two common ...