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A while back I wrote my article "Can Giant Airships Slowly Accelerate to Orbit Over Several Days" . It lead to a lot of discussion and as usual whenever you discuss John Powell's ideas, there were physicists and aeroengineers saying it is impossible.

It may seem like olden days to millennials, but the late 1970s were a lot like today. America was divided due to an unpopular President, gas was expensive, the movie industry was at death's door ... and genetic engineering was a big concern.

The story that won't be told in the wake of Harvey's wrath is the incredible risk to the thousands upon thousands of items of physical evidence being stored in police departments and crime laboratories throughout Texas - especially in Houston.  Any damage to this evidence may derail the state's pursuit of justice. 

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The IAU famously decided that Pluto is not a planet any more, calling it a "dwarf planet" instead, along with Ceres. However, their definition works as well as it does only because of a historical accident of our solar system and the bodies we have discovered in it so far. There are good reasons for thinking it has a "use before" date too, as we'll see.

A pervasive myth in Australia is that hot weather is the greatest danger to our health. In reality, it’s more likely cold weather will kill you.

For all our concern about the dangers of heatwaves, simple analysis of mortality data suggests the cold months present a much greater health risk. Almost 7% of deaths in Australia from 1988 to 2009 were attributable to cold weather. Less than 1% of deaths were attributable to heat.

Should we ban cars because of their potential to crash? Or stop selling painkillers in case someone takes too many? If we take the logic the EU applies to regulating pesticides, then the answer should be a resounding “yes”. Thankfully, EU lawmakers have looked at the weight of evidence and concluded the risk of driving cars and taking painkillers is acceptable – no ban needed.

Pesticides get different treatment though.

Take the class of insecticides so much in the news, neonicotinoids, that some have blamed for problems with bee health. Didn’t the European Union ban them claiming they were posing unacceptable risks to bees? Isn’t that case closed?

This is an article by the space engineer and Mars colonization enthusiast Robert Zubrin, The Planetary Protection Racket claiming that we don’t need to protect Earth from Mars microbes or Mars from Earth microbes. This is not the first time he has said controversial things like this, and they are not taken seriously by the planetary protection experts. Let’s go back to summer 2000, when he put forward similarly forceful arguments in print that there is no need to protect Earth from Mars microbes

This is what he wrote back then:

If I am alive, I probably owe it to my current very good physical shape.

That does not mean I narrowly escaped a certain death; rather, it means that if I had been slower there are good chances I would have got hit by lightning, under arduous conditions, at 4300 meters of altitude.

The heads of more than 100 of the world’s top artificial intelligence companies are very alarmed about the development of “killer robots”. In an open letter to the UN, these business leaders – including Tesla’s Elon Musk and the founders of Google’s DeepMind AI firm – warned that autonomous weapon technology could be misused by terrorists and despots or hacked to perform in undesirable ways.

The dominant Australian community would very much like to keep Indigenous communities from alcohol, but indigenous communities aren't having it. A giant black market has sprung up and such non-government alcohol sells for up to 1100 percent of the retail price.