Category Archives: General

Environmentalists in favour of nuclear power

In a piece for The Independent, four leading environmentalists have come out in favour of nuclear power.

stephen-tindale Stephen Tindale, former director of Greenpeace, said:

“My position was necessarily that nuclear power was wrong, partly for the pollution and nuclear waste reasons but primarily because of the risk of proliferation of nuclear weapons.

“It was kind of like a religious conversion. Being anti-nuclear was an essential part of being an environmentalist for a long time but now that I’m talking to a number of environmentalists about this, it’s actually quite widespread this view that nuclear power is not ideal but it’s better than climate change.”

mark-lynas Mark Lynas, an environmentalist and author, said:

“For an environmentalist, it’s a bit like admitting you are gay to your parents because you’re kind of worried about being rejected.

“I’ve been standardly anti-nuclear throughout most of my environmental career. I certainly assumed that the standard mantra about it being dirty, dangerous and unnecessary was correct.

“The thing that initially pushed me was seeing how long and difficult the road to going to 100 per cent renewable economy would be, and realising that if we really are serious about tackling global warming it the next decade or two then we certainly need to consider a new generation of nuclear power stations.

“In retrospect, it [moratoriums on the building of new nuclear power stations]  will come to be seen as an enormous mistake for which the earth’s climate is now paying the price. To give an example, the environmentalists stopped a nuclear plant in Austria from being switched on, a colossal waste of money, and instead [Austria] built two coal plants.”

chris-goodall Chris Goodall, a Green Party activist, said:

“[The challenges we face] mean we need to get real about energy. At the moment the public discussion is intensely emotional, polarised and mistrustful. This is particularly the case for nuclear power – too often people divide into sharp pro- or anti-nuclear positions, with no middle ground. Every option is strongly opposed: the public seems to be anti-wind, anti-coal, anti-waste-to-energy, anti-tidal-barrage, anti-fuel-duty and anti-nuclear. We can’t be anti-everything, and time is running out.”

The other environmentalist that came out in favour of nuclear power was Lord Chris Smith of Finsbury, Chairman of the Environment Agency.

Tindale, Lynas, Goodall and Lord Smith join Sir David King, former Chief Science Adviser to the government; Patrick Moore, the co-founder of Greenpeace; and James Lovelock, the environmentalist who proposed the Gaia Hypothesis and said “I am a Green, and I entreat my friends in the movement to drop their wrongheaded objection to nuclear energy.” Oh, and Einstein:

“If you succeed in using the nuclear-physical findings for peaceful purposes, it will open the way to a new paradise.”

See also:

Car crash timeline

From Drive.au comes the timeline of a car crash. All times are given in milliseconds, where 1000ms = one second.

0ms An external object touches the driver’s door.

1ms The car’s door pressure sensor detects a pressure wave.

2ms An acceleration sensor in the C-pillar behind the rear door also detects a crash event.

2.5ms A sensor in the car’s centre detects crash vibrations.

5ms Car’s crash computer checks for insignificant crash events, such as hitting a shopping trolley; computer is still working out the severity of the crash. Door intrusion structure begins to absorb energy.

6.5ms Door pressure sensor registers peak pressures.

7ms Crash computer confirms a serious crash and calculates its actions.

8ms Computer sends a “fire” signal to side airbag.

8.5ms Side airbag system fires.

15ms Roof begins to absorb part of the impact. Airbag bursts through seat foam and begins to fill.

17ms Cross-car load path and structure under rear seat reach maximum load. Airbag covers occupant’s chest and begins to push the shoulder away from impact zone.

20ms Door and B-pillar begin to push on front seat. Airbag begins to push occupant’s chest away from the impact.

27ms Impact velocity has halved from 50 km/h to 23.5 km/h. A “pusher block” in the seat moves occupant’s pelvis away from impact zone. Airbag starts controlled deflation.

30ms The car has absorbed all crash energy. Airbag remains in place. For a brief moment, occupant experiences maximum force equal to 12 times the force of gravity.

45ms Occupant and airbag move together with deforming side structure.

50ms Crash computer unlocks car’s doors. Passenger safety cell begins to rebound, pushing doors away from occupant.

70ms Airbag continues to deflate. Occupant moves back towards middle of car. Engineers classify crash as “complete”.

150ms Occupant becomes aware of collision.