标签：地平线 相关文章
One thing that excited him for many years is just how advanced their communication is, especially their famous waggle dance, returning from a foraging trip, this bee is telling its coworkers precisely where she found her pollen. They just use the bod
探索与发现2013年
-So these look terribly small, almost mistaken as mosquitoes.-Yeah, we could do, but I see them that they got two pairs of wings. -And actually they are proper bees. How did you find them be there? -So... Well, essentially it's the h* so these small
探索与发现2013年
And each time the radar switch past, a white mark reveals the position of the bee.-OK. Bees're coming back. The five bees are coming back. The radar records each excessive loop the bee makes until she returns safely to the hive. -Bees at hive. Bees a
探索与发现2013年
-You catch it the moment I see it, put it into a container like this, which contains 15 milligram of so-called solution.The bees are fed one of two different solutions. -We have c** which are fed with pesticide. We develop it in the circle solution a
探索与发现2013年
Over 2 years of study, Randolf has shown that these doses neonicotinoids do affect bees' higher cognitive processes, especially their memory of the landscape around them.-We tested about 200 bees, both controlled bees and pestcide-treated bees, and w
探索与发现2013年
-There are at least pieces of evidence which show really serious impacts from levels of neonicotinoids that bees, wild bees could be exposed to in wild environment.And the arguement against the ban was laid out by one of the pesticide manufacturers.
探索与发现2013年
-How does it work then? There are millions of insects out there in the air you sweeping. You target specific individuals.-That's right, so we have an individual honey bee which will be carrying this very small fine container on its back. And that's t
探索与发现2013年
Thankfully the micro s* can be treated, but when you look more closely, you can see what could be the real cooperate, a virus.-Here are the virus particles. We are looking at these particles at about 40,000 times magnification. Obviously, they will b
探索与发现2013年
And here it is, the flight of the humblebee. This is what's called its exploratory path. The routine takes its circles around the hive for the first time. Over several days it's built up a mental map more than 10 square kilometers around the hive. Th
探索与发现2013年
The first step is to try to really understand the enemy. Poor little bee. So Jean, where is it on this bee that? Ok. I think if you looked even with a naked eye. Just to the side of the abdomen. Yes, oh, on the belly there. That grape red colored. Ok
探索与发现2013年
-Do we have any fruits?-No fruits. There's no fruits available today. -Perhaps some tomatoes? -Tomatoes? No, no. Absolutely no tomatoes. It's fruit pollinated by bees. Like it, enjoy your meal? -No, it's little bit dry, though. -Bit bland. -OK. You m
探索与发现2013年
The thing is bees are very sensitive to the weather. If the temperature falls below fourteen degrees or if it rains they just won't leave the hive. The nectar of the flowers is also temperature dependent. So if it's cold, there will be less nectar an
探索与发现2013年
-So you had a tough year.-We have got that, yeah. It's been an incredibly bad winter, and that's companed with probably the worst summer we ever have had as well, last year. -So these boxes should be out, full of bees working. -Yeah, they have been b
探索与发现2013年
It suggested a baffling paradox that quasars are really shining black holes, capable of emitting the energy of entire galaxies. But Lynden-Bell then went further. I predicted that there would be these massive objects found in the nearby galaxies. He
探索与发现2013年
The mystery of what could count for the quasars' extraordinary brightness was the hot topic in astronomy during the 1960s. As astronomers began to grapple with the new enigmatic objects that had been found by the radio telescopes, one astronomer, kee
探索与发现2013年
But that is not the only surprise. People began to realize that these tiny star-like things or they looked like stars are actually putting out as much energy as a hundred of galaxies. And they didnt look like a galaxy at all. The paradox was how some
探索与发现2013年
They don't live very long on average just a few weeks in the summer time. But in that time they'll fly four or maybe five hundred miles in total. and here's the best part. They are the only insect to provide us with food in the form of liquid gold, h
探索与发现2013年
The difference is that when you have a lot of gas, a lot of stuff orbiting around the black hole, there is a little bit of friction that causes matter to slowly spiral in towards the black hole. As gas continues to spiral in towards the Event Horizon
探索与发现2013年
This summer, I set out to get to the bottom of a story thats captured the headlines. And this one, Ive got some experience myself, because Im also a beekeeper. There, is that good? Yeah, its perfect. Ok, I hate squeezing like that. I met some scienti
探索与发现2013年
It was a stunning discovery. After a quest lasting decade, Donald Lynden-Bell had been proved right. Here indeed, just where he had predicted, was a super massive black hole. But in the last year, the quest to find and understand black holes has sudd
探索与发现2013年