to swipe between full-screen apps on your mac, place four fingers on your trackpad or two on your magic mouse. swipe them left or right to move between full-screen apps. apps will
you can zoom in on a document, web page, photo, or other item by placing two fingers on your trackpad and moving them apart. you can zoom back out by pinching your fingers
mark changizi, an american neuroscientist, has developed a simple mathematical formula to explain the amount of an organism, from insects to mammals, even aliens.