in syria there are new reports poisonous gas is being used in the country's ongoing civil war. both rebel forces and the -- >> these attacks wounded dozens. videos posted online appear to show people with symptoms of poisoning in a rural rebel-held town. >> cnn cannot independently verify the authenticity of this footage. opposition groups say six people died friday because of chlorine gas attacks and barrel bombs. let's turn our attention to west africa. health workers in the region are racing to contain the ebola virus. remember, the world health organization has called this outbreak one of its most challenging cases ever. now air travelers in guinea's capital face special scanning before departing the country. this is all meant to help stop the spread of ebola by detecting anyone with a fever. most suspected cases have been reported in guinea and neighboring liberia.