Tag: science

The uncertainty of knowledge

1:28 pm

NOAA this week posted its monthly update of the solar cycle, showing the sunspot activity for the Sun in January. As I do every month, I am posting it here, below the fold, with annotations.

Back in October the Sun’s sunspot activity had plummeted, following almost two years of very weak activity. At that time, I wrote, “It appears the solar maximum has ended. The only question now is how long and deep the upcoming solar minimum will be.”

Well, talk about foolish predictions. I should shake hands with Al Gore and James Hansen for making the mistake of announcing the future as if I know what will happen. The truth is that no one truly understands the Sun’s sunspot cycle.

In January the Sun continued the high sunspot activity of the previous three months, once again producing sunspots in numbers close to the actual predictions of the solar science community. And while all their predictions remain generally high when compared to the actual numbers, they can now feel reassured that the overall length and strength of this solar maximum is beginning to resemble the prediction of the solar scientists who thought this would be a weak maximum.
» Read more

1 comment

Scientists claim that global warming will cause big waves that will exhaust fish!

12:06 pm

I am not making this up: Scientists claim that global warming will cause big waves that will exhaust fish!

Anthony Watts does a nice job of tearing apart this truly bad research. As he says, “This is what passes for science now; it looks like a high school science fair project.” He also digs down to check their claim that global warming will cause bigger waves and finds it baseless.

But then, when did most global warming advocates ever care that much about actual data?

0 comments

An analysis of the rotation of the peanut-shaped asteroid 25143 Itokawa suggests that its smaller end is actually far denser than its bigger end.

9:03 am

An analysis of the rotation of the peanut-shaped asteroid 25143 Itokawa suggests that its smaller end is actually far denser than its bigger end.

Previously, some researchers have proposed that Itokawa is actually two asteroids in contact with one another, a scenario strongly supported by the new results, the team contends. It’s not clear whether the odd configuration results from the merger of a two-asteroid system or merely clumps of material that fell back together after a larger asteroid was blasted apart by an immense collision.

The researchers also found that the asteroid’s rotation is actually increasing by 45 milliseconds per year.

0 comments

Scientists have found that bumblebees have the capability of flying at altitudes higher than the top of Mount Everest.

8:58 am

Scientists have found that bumblebees have the capability of flying at altitudes higher than the top of Mount Everest.

In a study published today in Biology Letters, two zoologists, Michael Dillon, now at the University of Wyoming in Laramie, and Robert Dudley of the University of California, Berkeley, tested whether bumblebees’ vertical range was limited by aerodynamics and physiology. Working in the mountains of Sichuan, China, the duo caught five male bumblebees (Bombus impetuosus) foraging at 3,250 meters and placed them in a plexiglas chamber. Once the bees began to fly upwards, the pressure inside the chamber was reduced using a hand pump to simulate altitude increases in 500-meter intervals. All five bees could hover at air pressures equivalent to elevations of 7,400 meters; three could fly above 8,000 meters; and two got to above 9,000 meters.

If you read the entire article, you will notice that it completely ignores the false urban legend that bumblebees are aerodynamically unsound and shouldn’t be able to fly. Scientists have known for decades that it is false, but for some reason it keeps getting repeated.

2 comments

Jupiter’s shrinking Great Red Spot.

9:34 am

Jupiter’s shrinking Great Red Spot.

In the 1880s the GRS resembled a huge blimp gliding high above white crystalline clouds of ammonia and spanned 40,000 km (25, 000 miles) across. You couldn’t miss it even in those small brass refractors that were the standard amateur observing gear back in the day. Nearly one hundred years later in 1979, the Spot’s north-south extent has remained virtually unchanged, but it’s girth had shrunk to 25,000 km (15,535 miles) or just shy of two Earth diameters. Recent work done by expert astrophotographer Damian Peach using the WINJUPOS program to precisely measure the GRS in high resolution photos over the past 10 years indicates a continued steady shrinkage.

Lots more fascinating information at the link. Read it all.

2 comments

NOAA fudges the numbers to turn a January cooling trend since 1930 into a warming trend.

10:06 pm

More climate manipulation: NOAA fudges the numbers to turn a January cooling trend since 1930 into a warming trend.

Adjusting the numbers might be justified in certain situations, but NOAA never explains why, and the adjustments they impose always create the illusion of a warming trend, even if the raw numbers say otherwise. If the adjustments were honest, I would expect them to move the numbers up and down much more randomly. That these adjustments only go one way — in favor of global warming — either suggests they are unconsciously allowing their biases to influence their work, or they are intentionally allowing their biases to influence their work.

Either way, their work is meaningless and untrustworthy, and should be ignored as less than worthless.

31 comments

Better medicine through engineering

3:26 pm

For me, the last eight months have been very interesting when it comes to medical treatment. I have had my left hand rebuilt to eliminate chronic pain, I had my heart inspected to make sure it was working properly, and this week I had the retina in my right eye re-attached using some very clever engineering.

For once, this essay will not be about the politics of medicine and the disaster of Obamacare, which is still ongoing. Instead, I will outline how freedom and human creativity has now made possible a whole range of modern medical techniques that are either improving the quality of life for patients or literally saving their lives.
» Read more

13 comments
1 … 521 522 523 524 525 … 729