bomb
edyong | June 7, 2009Where there are plants, there are almost certainly aphids feeding on them. These ubiquitous insects are banquets for many predators, and some have evolved incredible defences against them. The cabbage aphid, for example, is a walking bomb.
Its body carries two reactive chemicals that only mix when a predator attacks it. The injured aphid dies. But in the process, the chemicals in its body react and trigger an explosion that delivers lethal amounts of poison to the predator, saving the rest of the colony.
The aphids' chemical weapons are stolen from the plants they eat. Far from being…
sciencepunk | March 24, 2009
There's an old adage for bomb technicians - if you see them running, try to keep up. But preliminary research carried out by the Florida Institute of Technology suggests that bolting for the exit when confronted by a suicide bomber is a poor choice of strategy.
Assistant Professor Daniel Kirk and Fulbright Scholar Zeeshan-ul-hassan Usmani developed physics-based computer models to predict the magnitude and number of casualties occurring in suicide bomber attacks. They found that the precise location of individuals in the room had a large impact on the injuries they received.
Simulations…
esiegel | May 8, 2008Let's say we're having a nice day here on Earth; the Sun is shining, the clouds are sparse, and everything is just looking like a peach:
And then Lucas goes and tells me,
Oh my God, Ethan! It's Armageddon! An asteroid is coming straight for us! You've got to stop it!
Really? Me? Well, how would I do it? Let's say we've got some reasonably good asteroid tracking going on, and we've got about 2 months before the asteroid is actually going to hit us. We'd like to do something with the situation on the left, to avoid the situation on the right:
Well, what we really have to do is change the…