Stormy weather is likely Saturday, October 5 in the north-central United States, where a strong cold front will trigger winter weather and severe weather.
For 105 days, zookeepers monitored Sumatran tiger Melati through hidden cameras installed to keep an eye on her first birth. See the birth on this video.
"Since plants are emerging earlier in the year, they tend to be older and past their peak nutritional value by the time the hungry caribou arrive to eat them." - Jeffrey Kerby
NASA has produced a new video that shows what changes in temperature and precipitation can be expected if atmospheric CO2 concentrations continue to rise.
September 2013 has been busy for sightings of bright fireballs. The one at 11:33 p.m. local time on September 27 was the 14th fireball sighting in the U.S. in September.