Environment

Update at 11:15am:

Authorities in Kentucky say a fire at the site of a train derailment is expected to continue burning throughout the day. Officials had initially said that the fire, fueled by a pressurized chemical that was being carried by a railcar, would burn itself out within two hours. However, Doug Hamilton with Metro Louisville Emergency Management says the fire is expected to continue burning through the day Thursday.

Bernheim Arboretum and Research Forest is conducting experiments to determine which grasses, flowers and herbs work best when planted on rooftops. The Courier-Journal reports that the experiment called "Gardens in the Sky" involves three garden beds and two bee hives on the roof of the American Life Building in downtown Louisville.

Mammoth Cave in south central Kentucky is the first national park to become powered entirely by alternative fuels.  Melissa Howell of the Kentucky Clean Fuels Coalition spoke to lawmakers in Frankfort this week.