It's not the work of aliens. Instead, you can chalk these crop circles up to humans + money + time. And, with the help of satellite imaging, you can watch as humans use money to change the desert over the course of almost 30 years.
Landsat is a United States satellite program that's been in operation since 1972. Eight different satellites (three of them still up there and functioning) have gathered images from all over the world for decades. This data is used to help scientists studying agriculture, geology, and forestry. It's also been used for surveillance and disaster relief.
Now, at Google, you can look at images taken from eight different sites between 1984 and 2012 and and watch as people change the face of the planet. In one set of images, you can watch agriculture emerge from the deserts of Saudi Arabia — little green polka-dots of irrigation popping up against a vast swath of tan. In another se, you'll see the deforestation of the Amazon. A third, the growth of Las Vegas. It's a fascinating view of how we shape the world around us, in massive ways, over a relatively short period of time. Read the rest
At the Brainwaves blog, Ferris Jabr writes about a fascinating project. Anthropologist Andrew Irving talked random strangers on the streets of New York City into putting on a headset and speaking their inner monologue out loud as he followed behind them with a camera. The result is something that approximates what it might be like to be able to hear someone else's thoughts.
A woman worries about where she can find a Staples and contemplates her relationship with a friend who has cancer. A man deals with his emotions over two close friends (or, possibly, roommates, or lovers) having a baby together. Another man flits between internal discussions of totalitarianism, speculation about other people on the street, and his own attempts to figure out which direction he's heading. In general, it's all a mixture of engaging and mundane, swirled together.
Tonight, I got to meet Martyn Poliakoff — the fabulously frizzy-haired University of Nottingham chemist who you might recognize from a series of awesome videos about the periodic table that Xeni first blogged about back in 2008.
This is his business card.
It's a microscope image of the world's tiniest periodic table, which Poliakoff's friends inscribed on a strand of his own hair as a birthday gift in 2010. The hair, which Poliakoff keeps in a glass vial, has earned him a spot in The Guinness Book of World Records.Read the rest
Pompeii is the city frozen in time. Which means that nobody ever came through and cleaned up all the (often incredibly dirty) ancient Roman graffiti (or added their own, more modern, stuff).
So, what you find is a really cool time capsule of the way random, average puellae et pueri talked, at least in certain situations. This is colloquial Latin, and that's not something we get many chances to see.
It's also hilarious. I've seen some of these examples of Pompeiian graffiti over the years, but, as far as I'm concerned, it never gets old. (Ba-DUM-ching!) Some good examples:
From the Bar/Brothel of Innulus and Papilio: "Weep, you girls. My penis has given you up. Now it penetrates men’s behinds. Goodbye, wondrous femininity!"
From the Bar of Prima: The story of Successus, Severus and Iris is played out on the walls of a bar: [Severus]: “Successus, a weaver, loves the innkeeper’s slave girl named Iris. She, however, does not love him. Still, he begs her to have pity on him. His rival wrote this. Goodbye.”. [Answer by Successus]: “Envious one, why do you get in the way. Submit to a handsomer man and one who is being treated very wrongly and good looking.” [Answer by Severus]: “I have spoken. I have written all there is to say. You love Iris, but she does not love you.”
From the House of Pascius Hermes; left of the door: "To the one defecating here. Beware of the curse. If you look down on this curse, may you have an angry Jupiter for an enemy."
From the basilica: "The man I am having dinner with is a barbarian."
About a month ago, Mike Martin published a profile in Psychology Today, all about Margie Profet, a controversial evolutionary biologist and McArthur fellow who had been missing since 2004. (I posted a link to his story here.)
Now Martin says that Margie Profet has turned up—alive, if not totally physically well. His story led her to realize people were looking for her and to get back in touch with her family.
At the time we lost track of her, Margie was in severe physical pain. Not wanting to trouble anyone else, she did not disclose the fact to us or to her friends, but moved to a new location in which she thought the pain would soon diminish. Instead, it persisted for many years. Unable to work because of it and subsequent injuries, she had long lived in poverty, sustained largely by the religion she had come to early in the decade.
Margie is finally home now, recovering from her long ordeal and hoping to find work in the near future. She is very happy to be reunited with her family, and we are overjoyed to have her back.
In the course of preparing for a panel here at the Conference on World Affairs, I ran across a 2009 editorial by environmental journalist Fred Pearce, in which he explains why current global population trends aren't as horrific as they're often made out to be. I thought you should read it.
Global population is going up, Pearce writes, but that's not the same thing as saying that birth rates are going up. And, in the long run, that distinction matters. Around the world—not just in the West—human birthrates are decreasing. And they've been decreasing for a really long time.
Read the rest
Wherever most kids survive to adulthood, women stop having so many. That is the main reason why the number of children born to an average woman around the world has been in decline for half a century now. After peaking at between 5 and 6 per woman, it is now down to 2.6.
This is getting close to the “replacement fertility level” which, after allowing for a natural excess of boys born and women who don’t reach adulthood, is about 2.3. The UN expects global fertility to fall to 1.85 children per woman by mid-century. While a demographic “bulge” of women of child-bearing age keeps the world’s population rising for now, continuing declines in fertility will cause the world’s population to stabilize by mid-century and then probably to begin falling.
Far from ballooning, each generation will be smaller than the last. So the ecological footprint of future generations could diminish. That means we can have a shot at estimating the long-term impact of children from different countries down the generations.
Science writer Steve Silberman does an amazing job covering neurodiversity and the Autism community, so I've been waiting to get his take on the recent Centers for Disease Control data that found the rate of autism prevalence in the United States to be 1 in 88.
That prevalence rate has been on an upward trend for a while, and whenever the new stats come out (these are based on data from 2008), it triggers a shockwave of hand-wringing coverage that treats these figures as if they must be based on an increase in actual incidence of autism, as opposed to changes in diagnostic criteria and methods. This matters, Silberman writes, because the science seems to back up the idea that what we're actually seeing is better diagnosis.
That theory is bolstered by two recent studies in South Korea and the United Kingdom, which suggest that autism prevalence has always been much higher than the estimated 1-in-10,000 when the diagnostic criteria were much more narrow and exclusionary. What’s changed now is that — in addition to the radical broadening of the spectrum following the introduction of diagnostic subcategories like Asperger’s syndrome and PDD-NOS – clinicians, teachers, and parents have gotten much better at recognizing autism, particularly in very young children. That’s actually good news, because by identifying a child early, parents can engage the supports, therapies, modes of learning, and assistive technology that can help a kid express the fullest potential of their unique atypical mind.
The real problem, according to Silberman, isn't a mysterious increase in the number of children with autism. Read the rest