Environment

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First responders used dogs to sniff for bodies or injured residents of each residence and business damaged by the early morning tornado in south Hattiesburg, Miss., Saturday, Jan. 21, 2017. The tornado was part of a wall of stormy weather traveling across the region, bringing with it rain and unstable conditions. (AP Photo/Rogelio V. Solis)

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Shanise McMorris grieves on the slab of her Hattiesburg, Miss., home after an early tornado hit the city, Saturday, Jan. 21, 2017. Neither she or her husband or two children were injured when the roof collapsed on them. The tornado was part of a wall of stormy weather traveling across the region, bringing with it rain and unstable conditions. (AP Photo/Rogelio V. Solis)

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Shanise McMorris grieves on the slab of her Hattiesburg, Miss., home after an early tornado hit the city, Saturday, Jan. 21, 2017. The tornado was part of a wall of stormy weather traveling across the region, bringing with it rain and unstable conditions. (AP Photo/Rogelio V. Solis)

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Cody Poole climbs out of a window in his family’s severely damaged home in Petal, Mississippi, after looking for clothing. Poole says that’s also how he and family members exited the home following a predawn tornado on Saturday, Jan., 21, 2017. Petal Mayor Hal Marx says more than 300 homes were damaged in his 10,000-resident city, along with hundreds more in its larger neighbor of Hattiesburg. The twister plowed a 25-mile path across south Mississippi, killing four people and injuring dozens. (AP Photo/Jeff Amy)

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A house is caved in along Collins Road in Petal, Mississippi, following a predawn tornado on Saturday, Jan., 21, 2017. Petal Mayor Hal Marx says more than 300 homes were damaged in his 10,000-resident city, along with hundreds more in its larger neighbor of Hattiesburg. The twister plowed a 25-mile path across south Mississippi, killing four people and injuring dozens. (AP Photo/Jeff Amy)

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Minnesota Wild's Marco Scandella fights for control of the puck against Anaheim Ducks' Ryan Getzlaf in the second period of an NHL hockey game Saturday, Jan. 21, 2017, in St. Paul, Minn. (AP Photo/Stacy Bengs)

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United States' Venus Williams wraps an ice towel around her neck during a break in her fourth round match against Germany's Mona Barthel at the Australian Open tennis championships in Melbourne, Australia, Sunday, Jan. 22, 2017. (AP Photo/Aaron Favila)

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The shoreline below the Monterey Dam, along the Rock River in Janesville on Tuesday, Jan. 10, 2017. Most of the Monterey Dam Citizen Advisory Committee leans toward removing the dam. (Anthony Wahl /The Janesville Gazette via AP)

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The water below the Monterey Dam, along the Rock River in Janesville on Tuesday, Jan. 10, 2017 .The Monterey Dam Citizen Advisory Committee will soon recommend to the the Janesville City Council a solution to address the dam. The Department of Natural Resources has ordered the city to repair or remove the dam. (Anthony Wahl /The Janesville Gazette via AP)

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Trees and debris cover the ground after a tornado tornado ripped through the Hattiesburg, Miss., area early Saturday, Jan. 21, 2017. Mayor Johnny DuPree has signed an emergency declaration for the city, which reported "significant injuries" and structural damage. (Ryan Moore/WDAM-TV via AP)

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In this Feb. 28, 2013, file photo, Ohio Agriculture Director David Daniels discusses security at the state's holding facility for confiscated exotic animals in Reynoldsburg, Ohio. Daniels says as of early 2017, about 12,000 farmers and fertilizer applicators have completed a three-hour training program that soon will be required to use commercial fertilizer, but he estimates 6,000 to 10,000 farmers still need the certification. The first-of-its-kind requirement, approved by Ohio lawmakers in 2014, is one step the state has taken to reduce farm runoff that feeds toxic algae in lakes and rivers. (AP Photo/Andrew Welsh-Huggins, File)

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FILE – In this Oct. 16, 2015, file photo, algae coats rocks in view of Cincinnati's skyline on the banks of the Ohio River in Newport, Ky. As of early 2017, about 12,000 farmers and fertilizer applicators have completed Ohio's three-hour training program that soon will be required to use commercial fertilizer. The first-of-its-kind requirement, approved by Ohio lawmakers in 2014, is one step the state has taken to reduce farm runoff that feeds toxic algae in lakes and rivers. (AP Photo/John Minchillo, File)

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FILE – In this Aug. 3, 2014, file photo, the water intake crib for the city of Toledo, Ohio, is surrounded by an algae bloom on Lake Erie, about 2.5 miles off the shore of Curtice, Ohio. As of early 2017, about 12,000 farmers and fertilizer applicators have completed Ohio's three-hour training program that soon will be required to use commercial fertilizer. The first-of-its-kind requirement, approved by Ohio lawmakers in 2014, is one step the state has taken to reduce farm runoff that feeds toxic algae in lakes and rivers. (AP Photo/Haraz N. Ghanbari, File)

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FILE – This undated file photo shows liquid manure sprayed over a field to fertilize crops on a farm in Union County, Ohio. As of early 2017, about 12,000 farmers and fertilizer applicators have completed Ohio's three-hour training program that soon will be required to use commercial fertilizer. The first-of-its-kind requirement, approved by Ohio lawmakers in 2014, is one step the state has taken to reduce farm runoff that feeds toxic algae in lakes and rivers. (Jeff Hinckley/The Columbus Dispatch via AP, File)

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Argentine striker Carlos Tevez attends his first presser after joining Shanghai Shenhua in Shanghai, China Saturday, Jan. 21, 2017. Shanghai Shenhua has recruited Carlos Tevez reportedly with a deal that made the Argentine the highest-paid soccer player in the world. (Chinatopix Via AP)

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Argentine striker Carlos Tevez attends his first presser after joining Shanghai Shenhua in Shanghai, China Saturday Jan. 21, 2017. Shanghai Shenhua has recruited Carlos Tevez reportedly with a deal that made the Argentine the highest-paid soccer player in the world. (Chinatopix Via AP)

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Argentine striker Carlos Tevez attends his first presser after joining Shanghai Shenhua in Shanghai, China Saturday Jan. 21, 2017. Shanghai Shenhua has recruited Carlos Tevez reportedly with a deal that made the Argentine the highest-paid soccer player in the world. (Chinatopix Via AP)

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Two Korean Jindo-mix puppies, which were rescued, play at the Alachua County Humane Society in Gainesville, Fla., Jan. 17, 2016. The pair are among nearly 200 dogs rescued from a South Korean "meat farm" in early December, and if animal advocates had not intervened, likely would have been used for food. (Andrea Cornejo/Gainesville Sun via AP)

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Veterinary Assistant Shelby Hardy and volunteer Keith Downey examine Bernard, a Korean Jindo-mix puppy who was rescued at the Alachua County Humane Society in Gainesville, Fla., Jan. 17, 2016. Bernard was among nearly 200 dogs rescued from a South Korean "meat farm" in early December, and if animal advocates had not intervened, likely would have been used for food. (Andrea Cornejo/Gainesville Sun via AP)