There is the riddle of the Bermuda Triangle. The answer, revealed on Tuesday in a journal published by Britain’s prestigious Royal Society, is that sheepdogs cleverly follow a simple rulebook. Researchers fitted highly accurate GPS tracking devices into backpacks that were then placed on a trained Australian Kelpie sheepdog and on a flock of 46 female merino sheep in a five-hectare (12-acre) field. “It basically sees white, fluffy things in front of it,” said Andrew King of Swansea University in Wales.

There is the riddle of the Bermuda Triangle. The answer, revealed on Tuesday in a journal published by Britain’s prestigious Royal Society, is that sheepdogs cleverly follow a simple rulebook. Researchers fitted highly accurate GPS tracking devices into backpacks that were then placed on a trained Australian Kelpie sheepdog and on a flock of 46 female merino sheep in a five-hectare (12-acre) field. “It basically sees white, fluffy things in front of it,” said Andrew King of Swansea University in Wales.

The trooper put in charge of tamping swirling racial tensions in this St Louis suburb vowed Sunday to stay “as long as it takes,” after violence flared anew. Captain Ron Johnson also apologized for a white police officer’s shooting of 18-year-old Michael Brown, which caused long-simmering tensions to spill over for more than a week since his death in Ferguson, home to a black majority. “I want to start off by talking to Mike Brown’s family. I want you to know my heart goes out to you, and I say that I’m sorry,” Johnson said to loud cheering and applause from a crowd of more than 1,300 people at Greater Grace Church in Ferguson.

The trooper put in charge of tamping swirling racial tensions in this St Louis suburb vowed Sunday to stay “as long as it takes,” after violence flared anew. Captain Ron Johnson also apologized for a white police officer’s shooting of 18-year-old Michael Brown, which caused long-simmering tensions to spill over for more than a week since his death in Ferguson, home to a black majority. “I want to start off by talking to Mike Brown’s family. I want you to know my heart goes out to you, and I say that I’m sorry,” Johnson said to loud cheering and applause from a crowd of more than 1,300 people at Greater Grace Church in Ferguson.