martin howuser is the senior biotechists.s she found are stingless bees which aren't supposed to be here. they live in brazil. >> shows how small they are. >> so small. >> they're very small. that's a honey bee to compare. >> she took us to the unclosed location under the condition we wouldn't divulge the special tree in her special place. >> when you came up here how many were there? a ton. >> and how did stingless bees get here in the first place. decades ago the u.s. department of agriculture was looking for bees to boost the size of fruit and vegetable able crops. >> in 1950 the usda asked a brazilian researcher to send them bee colonies to have alternative pollinators. >> wow. >> he sent to gainesville, florida, davis and palo alto and he said all of the bees died in one year. they didn't like the cold weather in utah. they couldn't compete in florida. >> they also went to stanford professor. >> only the colonies send to the doctor survived in palo alto for eight years. >> but we're like 70 years later now. >> i know for