Why wait? -- In one minute: your heart beats 60-100 times -- In eight minutes: light from the sun reaches Earth -- In one hour: a barn owl hunts its prey -- In one night: the moon rises and falls -- In one day: a dragonfly gets ready to fly -- In twelve days: a blackbird incubates her eggs -- In two weeks: a camel crosses the desert to drink -- In one month: the moon completes a lunar cycle -- Over many months: a honeypot ant stores food -- In one winter: a grizzly bear waits for spring -- In nine months: a baby is born -- In one year: an apple tree grows fruit -- In twenty-five years: a coral reef starts to form -- In thirty years: a century plant blooms -- In sixty years: an African savanna elephant grows old -- In around eighty years: a human lives a lifetime -- In over one hundred years: a Galápagos giant tortoise completes its life cycle.