I don't think there exists many records of air quality going many decades back.  But the changes since the 80's in Europe are quite dramatic.  I recall visiting London back then, and after a few days, if I blew my nose, the tissue would be black with soot.  That is no longer happening.  I still can...

31706 Sinking Cities: Episode 4: Miami Not available in my region due to rights restrictions.  Global sea level rise is a good example for why adaptation should be a priority.  First, we must learn that coastlines are not static, not just on geological timescales, but also on human timescales.  The...

31674 Quite frankly, I think the exaggeration is justified.  It is needed to motivate human beings to act, which humanity has historically been sluggish in doing. I think many people think like you do, even some scientists.  The main problem is that for a complex problem with extremely expensive so...

Maybe it's different in the US, more polarised.  There are many ridiculous claims on both sides, and scientists should address both extremes. One thing for sure is that many scientists wisely avoid going public and getting drawn into a highly polarised debate.  And it's somewhat delicate.  For insta...

31659 Thankfully it is not up to activists to make a plan (and if they did it probably would be ridiculous or unfeasible), Many activists are precisely demanding unfeasible results in a ridiculously short time. And then, if policy makers did implement the most effective policies (such as expansion ...

31653 Well I find it quite heartening that auto manufacturers are stepping up and releasing many more EVs that travel larger distances without needing to be recharged. That's great for local pollution, in particular in cities, but the energy still needs to come from somewhere, so you haven't really...

A-L-E-X: 31548 Friday was a truly historic day for the potent new social movement committed to sounding a global alarm about the climate crisis. The Global Climate Strikes, inspired by Swedish climate activist Greta Thunberg, age 16, may end up being the largest mass protest for action on global war...

Very early signs of winter in southern Norway as well.  This is from my neighbourhood in Oslo on the 4th of October.  Just a light snowfall and the snow is gone now, except in a few shady places, but a new, larger round of snowfall is expected tomorrow.

Went hiking in the mountains this weekend, doing one of the most popular hikes in Norway  (again).  About 50,000 people do this 14 km hike every year.  It's not a difficult hike, but, as always, the weather can quickly change in the mountains.  This time we managed to finish a few hours before the r...

I mostly use DEADBEEF (32 bit), DEAD (16), and AA or 55 (8 bit) to initialise memory which I need to inspect later whether overwritten.  Common practice when I began programming machine code back in the 80's.

31269 We are in the middle of a mass extinction right now because humanity is seizing land that should be set aside for nature, not to mention other problems that go along with this issue, like climate change and plastic in the oceans.  Studies have shown that the best way to reduce climate change ...

What are the odds that a lightning strikes the ground and detonates an unknown WWII bomb underground and somebody happens to record it with his mobile phone?

From a hike in Jorunheimen last weekend.

30938 Mid do you have any idea what the effective focal length should be to clearly see the following: I don't know.  I'm on travel right now, but you should be able to figure out the angular size for these things by a bit of googling, and compare that to what I found above, i.e. you need nearly 10...