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Comment I hope this is not true (Score 1) 149

I think very few people like the taste of coffee the first time they taste it in their life, and they have to "get used" to the taste and/or add a lot of milk/sugar in the beginning. I really dislike the taste and never really felt any reason to force myself to like/drink coffee, I drink energy drink or take a caffeine pill if I am really tired and really need to wake up. I hope this effect is a correlation and not a causation, and that I'm not loosing out on too much health benefits.

Comment They should fix their units... (Score 1) 201

You cannot multiply a unit of "CO2 per person per year" by 1 billion people and then still call the resulting unit "CO2 per person per year". I guess what they are trying to say that 1 billion people emits less than 1 ton "CO2 per year", so in a lifetime of ~75 years 1 billion people will emit less than 75 tons of CO2 which is what an 11 minute space flight emits per person. That figure seems very low, are they talking about the amount of CO2 people exhale from their bodies during their lifetime?

Comment Re:How could they possibly know? (Score 1) 50

I wonder if we know the trajectory of Oumuamua precisely enough, so that we can find it again, when we in 100+ years hopefully have the propulsion technology to catch up to it. It was only leaving the Solar system at about 70,000 mph or about 0.01% of light speed, so even with 100+ years of head start, we would only need a few percent of light speed to catch up quickly.

Comment Re:Stupidity (Score 1) 103

I guess this might make sense in some places if they cannot make electric powered furnace that are hot enough? But using this in a power plant instead of coal seems stupid: Burn iron powder for energy, and then use renewable energy to turn it back into iron powder. Why not just use the renewable energy directly?? There must be a loss in this iron powder process.

Submission + - 51st Known Mersenne Prime Found! (mersenne.org)

chalsall writes: The Great Internet Mersenne Prime Search (GIMPS) has discovered the largest known prime number, 2^82,589,933-1, having 24,862,048 digits. A computer volunteered by Patrick Laroche from Ocala, Florida made the find on December 7, 2018. GIMPS has been on amazing lucky streak finding triple the expected number of new Mersenne primes — a dozen in the last fifteen years.

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