A French composer on a trip to Canada's Northwest Territories to record the sounds of nature was attacked in his tent in the middle of the night and killed by a grizzly bear earlier this month. Such an unprovoked attack is rare, according to wildlife officials, although large carnivore attacks on humans are on the increase worldwide. Grizzly bear attacks on humans in Wyoming are part of that worldwide trend.

A new paper published in the journal Scientific Reports examines brown bear attacks on humans worldwide between 2000 and 2015. The report reinforces what we already suspected: attacks have increased significantly and are more frequent at high bear and low human population densities.

Researchers tallied 664 attacks on humans during the 15-year study period, including 183 in North America, 291 in Europe, and 190 in Russia, Iran and Turkey. There were more than 60 other attacks in Japan, Nepal, and southeastern Europe in which not enough information was available for their inclusion in the analysis.

The attack rate is about 40 attacks per year globally, with 11 attacks per year in North America, 18 per year in Europe, and 19 per year in the East (Russia, Iran and Turkey). About 14 percent of the attacks resulted in human fatalities, including 24 deaths in North America, 19 deaths in Europe, and 52 in the East (Russia, Iran, and Turkey). Of the brown bear attacks causing human injury in North America, 51 occurred in Alaska, 42 in British Columbia, 29 in Wyoming, 25 in Montana, and 18 in Alberta.

Globally, attack victims were almost exclusively adults, and most attacks occurred while the person was alone, during the summer, and in daylight hours. About half the attacks were categorized as encounters with females with cubs, while 20% were surprise or sudden encounters.

Interestingly, there were 15 attacks classified as "predatory" in which a predator attacks a human as prey: 9 in Russia, and 6 in North America. The bear attacks at the Soda Butte Campground just outside Yellowstone National Park in 2010 involved a sow grizzly killing a man camped alone in his tent, and injuring two other people in other campsites the same night, in what was deemed predatory attacks. The next summer, a female grizzly with cubs killed a man in Yellowstone National Park in what was then viewed as a defensive attack, but the same sow was linked to the death of a second man a month later in which the man's body had been partially consumed.

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