Science

Another case of conspiratorial thinking, selfish politicians, and conflict threatening to make a deadly serious threat into a dire global emergency: Pockets of “reluctance, refusal and resistance” to accept Ebola vaccination were generating many of the new cases, Salama said. “We also see a very concerning trend. That resistance, driven by quite natural fear of […]

{ 3 comments }

LOX and RP-1 never burn absolutely clean, and there is always a bit of free carbon in the exhaust, which produces a luminous flame. So when you’re looking at TV and see a liftoff from Cape Kennedy—or from Baikonur for that matter—and the exhaust flame is very bright, you can be sure the propellants are […]

{ 0 comments }

Finally somebody in authority sat down and thought the problem through. The specifications of JP-4 [jet fuel] were as sloppy as they were to insure a large supply of the stuff under all circumstances. But Jupiter and Thor [ballistic missiles] were designed and intended to carry nuclear warheads, and it dawned upon the thinker that […]

{ 0 comments }

[Calculating rocket fuel performance mathematically] gets worse exponentially as the number of different elements and the number of possible species [of reaction products] increases. With a system containing carbon, hydrogen, oxygen, and nitrogen, you may have to consider fifteen species or more. And if you toss in boron, say, or aluminum, and perhaps a little […]

{ 0 comments }

A couple of days ago the New York Times published a long and controversial article by Nathaniel Rich which purports to explain why, despite decades of strong scientific consensus about the seriousness of climate change and the action needed to keep it under control, we’re still on track for catastrophic warming: Losing Earth: The Decade […]

{ 1 comment }

Slashdot reports: “Researchers at the Technische Universitat Wein have created a simulation of a simple worm’s neural network, and have been able to replicate its natural behavior to completely mimic the worm’s natural reflexive behavior.” When it comes to bodies, at least down to the level where quantum uncertainty becomes important, there seems to be […]

{ 1 comment }

Richard Dawkins’ Unweaving the Rainbow includes a great discussion of the scientific uses of the Fourier transform. Most amusingly: “The side-to-side waving of the urine trail on the road was presumably produced by the long [elephant] penis acting as a pendulum (it would be a sine wave if the penis were a perfect, Newtonian pendulum, […]

{ 0 comments }

Canada’s bitumen sands continue to be the largest source of growth in Canada’s greenhouse gas pollution, and the biggest barrier to Canada’s fair participation in a global climate change mitigation strategy. Not only does continued bitumen sands investment perpetuate an industry which undermines Canada’s claim to be serious about Indigenous reconciliation, but giving the industry […]

{ 0 comments }

Then they led him out again, trying to get him near a mockup of a Mercury capsule, where the television networks had set up cameras and tremendous lights. The reporters and photographers surged forward again, yammering, yelling, exploding more camera lights, shoving, groaning, cursing—the usual yahoo sprawl, in short—and the animal came unglued again, ready […]

{ 4 comments }

Sulfolobus solfataricus P2 DNA polymerase IV (Dpo4) is a DinB homolog that belongs to the recently described Y-family of DNA polymerases, which are best characterized by their low-fidelity synthesis on undamaged DNA templates and propensity to traverse normally replication-blocking lesions. By Bathsheba

{ 1 comment }