Linden Gledhill's Flickr page contains 32 sets of photographs, half of them devoted to biology or physical phenomena in nature. You could spend hours looking at them, for they include insects, plants, insect eggs, insect parts, fungi, as well as paint splashes, astronomy shots, and travel photographs. Linden has given me permission to put up a few of his insect pictures, but be aware that they're "copyright Linden Gledhill" and can't be further reproduced without his permission.
This is the Cueva de las Manos (Spanish for Cave of the Hands), a UNESCO World Heritage Site located in the province of Santa Cruz, Argentina (south of the town of Perito Moreno). Its name and claim to fame are obvious, although a variety of other art subjects are present. The art in the cave dates from 13,000 to 9,000 years ago, the oldest being 9,300 BCE. The site was last inhabited around 700 CE (or AD), possibly by ancestors of today’s Tehuelche people.
The age of the paintings was calculated from the remains of a very interesting tool: bone-made pipes used for spraying the paint. The inhabitants, who varied over time as different groups moved in and out, had actually developed stenciling, not an art style we usually associate with ancient people (note that most of the hands are left, suggesting that they used their right hands to hold the pipe).
The binder used to combine the paint is unknown, but these people were pretty sophisticated: they knew which mineral pigments to utilize and how to do so. Iron oxides, for example, were used to produce reds and purples, kaolin for white, natrojarosite for yellow, and manganese oxide for black. Art was serious business to them.
Other depictions include human beings, guanacos, rheas, felines and other animals. Most amazing to me is the presence of geometric shapes and zigzag patterns, which shows that these people had conceptions of abstract art forms, rather than merely painting what they saw (although humans probably developed that far earlier anyway, it’s still fascinating to see it on display given the popular perception of prehistoric people as lacking such cognitive abilities).
There are also naturalistic portrayals of a variety of informative hunting techniques, including the use of bolas, a throwing weapon that was used like a sling. Perhaps they were just depicting everyday life, but maybe this was meant to be educational. I’d like to think they sat their kids down and went over these images like a teacher at a chalkboard.
Curiously, there are also red dots on the ceilings, probably made by submerging their hunting bolas in ink, and then throwing them up in the air. This suggests that these folks might have been experimenting with different art forms, although perhaps it was just some sort of ritual or form of practice.
Either way, it must be breathtaking to see this in person, to be able to put my hands close and realize that these were the physical marks of human beings just like me. And wonder what else they did in their spare time? What was their idea of fun? Maybe this art was recreational rather than utilitarian? Either way, it’s beautiful and a wonderful reminder of where we came from.
The effects of the Deepwater Horizon spill will probably be felt for generations, if historical precedent is anything to go by (oil spills from decades ago are still wreaking havoc on ecosystems). Though most people seem to have forgotten all about it, we’re already seeing some chilling mutations emerge, as Gizmodo reports:
The effect that the oil spill and its reckless cleanup has on sea life is frightening, damning and sad. Here’s a list of deformities that Al Jazeera found in its report:
- Shrimp with tumors on their heads
- Shrimp with defects on their gills and “shells missing around their gills and head”
- Shrimp without eyes
- Shrimp with babies still attached to them
- Eyeless fish
- Fish without eye-sockets
- Fish without covers on their gills
- Fish with large pink masses hanging off their eyes and gills
- Crates of blue crabs, all of which were lacking at least one claw
- Crabs with holes in their shells
- Crabs with shells that have no spikes or claws or misshapen claws
- Crabs that are dying from within
The fishermen, scientists, and seafood processors who talked to Al Jazeera are all in unison: They’ve never seen this before. Some have worked in and around the Gulf for over 20 years, and most have seen thousands and thousands of fish. This is the first time they’re seeing the mass mutation and destruction of seafood.
And it’s not just the obvious deformities. Tests of the oysters that wind up on our plates have shown elevated levels of nickel and vanadium according to the Natural Resources Defense Council. And the jury’s still out on arsenic, cadmium, lead and mercury levels.
It may be even longer before we detect the effects on human health – if we ever get to that point.
Many of the most pressing problems our species faces – such as climate change, food and water scarcity, and energy shortages – require scientific solutions. Only through research, experimentation, and innovation can we are way around these looming catastrophes.
Yet science itself faces an even greater challenge than these global crises – a lack of public and political support. That was the prevailing assessment by scientists from across the world who gathered at an annual meeting in Vancouver, Canada hosted by the American Association for the Advancement of Science.
Participants noted that the global public as a whole “does not understand science,” and that science itself was “under siege” by religious and ideological forces. As one attendee starkly observed, “We have a planetary emergency, and very few people recognise that.”
The theme of the five-day meeting, attended by some 8,000 scientists from 50 countries, was “Flattening the World: Building a Global Knowledge Society.”
“It’s about persuading people to believe in science, at a time when disturbing numbers don’t,” said meeting co-chair Andrew Petter, president of Simon Fraser University in this western Canadian city.
Experts wrangled with thorny issues such as censorship, opposition from religious groups in the United States to teaching evolution and climate change, and generally poor education standards.
“We have to plan for a future, considering the risk of climate change, with nine to 10 billion people,” said Hans Rosling, a Swedish public health expert famous for combating scientific ignorance with catchy YouTube videos.
Rosling, pointing to charts showing how human populations changed with technology and how without science the majority of a family’s children die, said it is naive to think that humanity can easily go backward in history.
“I get angry when I hear people say: ‘In the rainforest people live in ecological balance.’ They don’t. They die in ecological balance,” he said.
Indeed, global warming is an indicative example of this issue. Despite an overwhelming scientific consensus, the majority of Americans remain unconvinced about climate change, and skepticism has only grown more over the past few years. Even those who accept the phenomenon nonetheless erroneously believe that we’ll be able to adapt, which is yet another manifestation of scientific ignorance.
The United States is particularly susceptible to anti-intellectualism, and it runs rather deep in our history (ironic, given that our much deified founders were pretty cerebral themselves). Academics and scholars remain just as distrusted as their scientific peers, and many Americans – egged on by pundits and polemists – often see intelligent people as elitist, aloof, and even insidious (especially if they have Ivy League degrees).
Granted, bias, narrow-mindedness, and immorality bedevil even the most intelligent members of our society, as these are universal human flaws. Furthermore, even smart people can be wrong, and the scientific consensus has sometimes needed tweaking, if not outright abandonment. So some degree of measured analysis and critical thinking must be applied to any and all claims – that’s why self-correcting measures such as peer review and re-experimentation have been institutionalized.
But the general public has reached a point of extreme fallibism, in which nearly all the claims made by “experts” are reflexively doubted because of the very fact that they were made by experts. Personal experience, or even mere intuition, are seen as more legitimate, even though they’re each limited by our own cognitive constraints (e.g. our sense can fool us, our life experiences are limited, etc).
This is one of the most beautiful things I’ve seen in a while. To see something come to life, especially when it’s on the verge of extinction, is breathtaking. Click the hyperlink to see more of the hatching – I challenge you not to melt. I hope these little guys make it and thrive.
This is probably the most innovative approach to studying nature I’ve ever found. The Cornell Laboratory of Ornithology has set up a camera offering a live feed of a pair of red-tailed hawks (Buteo jamaicensis), which have so far laid three eggs.
Here’s the information from the site:
About the Nest
A Red-tailed Hawk pair has been nesting on a light pole 80 feet above Cornell University’s athletic fields on Tower Road for at least the past four years. In 2012, we installed a camera to get a better look at these majestic birds as they raise their young amid the bustle of a busy campus. So far, we’ve seen the birds bringing prey such as voles, squirrels, and pigeons to the nest.
Big Red and Her Mate
The female, nicknamed “Big Red” in honor of her alma mater, is slightly larger, with a darker head, nape and throat, and is banded on her right leg. From banding records we know she was banded in nearby Brooktondale, New York, during her first autumn in 2003, making her nearly nine years old.
The male, who does not yet have a nickname, is banded on his left leg. He’s a bit smaller and has golden-tawny feathers on his face and head, and a paler neck than the female. He is at least seven years old and was first banded in 2006 as an adult bird on Judd Falls Road near the Cornell campus.
Learn more about Red-tailed Hawks in our online species guide.
Click here for a live camera feed. As I write this, I’m watching the female come back to the nest and lovingly tend to the eggs. It’s such a beautiful sight, and I’m having difficulty taking my eyes of it. Please bookmark the site and check on it periodically. It’ll be something once those eggs hatch (spare some money to donate to the project if you can too).
If you glance at the picture below quickly, it looks an awful lot like one of those colorful, exotic caterpillars you see on nature shows.
They’re actually a closely bunched group of European Bee-eaters, photographed by Jose Luis Rodriguez. I recommend you check out the rest of the site in that hyperlink, as it’s full of beautiful (though not as illusionary) photos of Europe’s wildlife.
There’s something very charming about these odd but adorable birds.
The Australian Broadcasting Network (a pretty reputable news source) recently posted footage of an extremely rare marine animal known as theShepherd’s beaked whale, which had been spotted off the southern coast of Australia. This is the first video ever taken of this species, our knowledge of which is limited to only six sighting and 29 beached specimens.
You can access the video in the first hyperlink, since I can’t embed it here. Its well worth the attention, as it represents a beautiful and intimate glimpse into a very mysterious creature (which appears to be joined by many other different kinds of marine life).
As to be expected, we don’t know much about this enigmatic creature, other than that it’s quite small for it a whale, and seems to be a deep-water feeder found only in the Southern Hemisphere, near Antarctica.
It’s amazing to think that with our technological intrusion into seemingly every inch of this planet, there is still so much that remains unknown. Who knows what else is waiting to be found in this great expanse of blue. We often talk of space as a frontier, but I think our own oceans will remain quite untamed for years to come.