Unthinkable tragedy at a CrossFit competition in the USA: Serbian athlete drowns helpless just before the finish line
Video shows Lazar Đukić struggling to stay above water but failing – Questions arise about the organizers' response
US: Scientists sound the alarm over rivers in Alaska – Why they are turning orange
Researchers have identified at least 75 orange rivers and streams in an area the size of Texas. The phenomenon is due to the melting of permafrost covering large areas of the Arctic
USA: 19 dead and unimaginable damage from storms and tornadoes – Kentucky in a state of emergency
The extreme weather events "hit" Texas, Arkansas, Oklahoma and Kentucky - Meteorologists warn that they will become more intense