The hunts she runs operate an " ethics " policy , under which most of the animals are very old well beyond reproductive age and the hunts must involve a fair chase .
Although such team hunts are rarely seen , scientists believe they may be the most complex ever documented in the natural world .
虽然这样的团队狩猎非常罕见,科学家们相信这可能是在自然世界从未有过的最复杂记录。
Why people believed also varied , the researchers report in a new book , called " paranormal america : ghost encounters , ufo sightings , bigfoot hunts , and other curiosities in religion and culture . "
From the south pole the observatory hunts out particles that come barreling out of the northern sky ; some strike atoms at earth , some pass straight through the planet , and a critical few pass nearly all the way through , striking an atom in the last few kilometers of antarctic ice instead .