I don't share givan's belief, but I would note that this depends heavily on the complexity of the idea. If, for instance, manuscripts with identical detailed stories were found in two distant civilizations from the same time period, I would consider that evidence that the civilizations had interacted.
Pumapunku was built thousands of years after the pyramids in egypt. Plenty of time for banging rocks together to determine which one is the harder and figuring out that using flat stones and sand is great for polishing.
Unless they're aiming that 100% LED street lighting where it won't wind up in the sky, I don't see how that'd make a difference. And street lighting isn't the sole source of light pollution - in many cities, buildings are lit from the outside at night with big floodlights pointing upwards. I'd imagine that has a fairly big effect on light pollution.
Your comparison with smoking is completely unfair. The problem is that we have scientific proof that smoking tobacco causes lung cancer (the emphasis is on "causes"). The problem with nutritional science is that we only have correlation data (or at least it looks like so).
I have listened to it. It was interesting but it was disappointing at some moments. It is interesting how conspiracy theories work both for and against his position (I will take it as irrelevant for discussion). It is interesting how some of his facts are poorly investigated. E.g. he mentioned EPIC (http://en.wikipedia.org/wiki/European_Prospective_Investigat...) but EPIC found only that regular consumption of PROCESSED meat increases the risk of cardiovascular diseases and death from cancer. There is no correlation between unprocessed meat and those health problems according to EPIC.
BTW I'm from Europe and sometimes I visit USA. Food in USA is usually bad and usually accompanied with bad eating behaviors. You can get good food in USA but it is expensive and hard to find. I can see how changing diet to vegan/vegetarian can improve health if you are living in USA.
If you don't like that then you can always vote with your wallet and buy something with replaceable battery then. I had 10 phones and only one battery problem (12 years ago). I simply bought new phone as old one became really outdated.
Or you don't like that because you see it as bigger problem? E.g. you think that it is environmental problem.
Could you base your arguments with some facts? I work in international company and don't find Chinese in the top risk taking colleagues (Americans win big in this area). That's equally anecdotal like in your case but since it is different experience it would be interesting to hear where you experience comes from.