Early human ancestor on display at London’s Natural History Museum

by Sean McLachlan on

The Natural History Museum in London has put an important fossil of one of our species’ early ancestors on display.

Australopithecus sediba lived 1.98 million years ago in what is now South Africa. It’s thought by some scientists to be a transition species between the more ape-like Australopithecines and the later, more human-like genus Homo. While it has the small brain size of the Australopithecines (although larger than most), its jaw and body look more like the Homo species. The hands are especially well-formed and it may have used tools.

Two exact replicas of the most complete Australopithecus sediba skeletons were recently donated to the museum by the University of the Witwatersrand and the Government of the Republic of South Africa. At the moment only one skull is on public view. Hopefully the full skeletons will go on display soon. It’s the first public exhibition of this species in the UK.

These are exciting times in paleontology. New human ancestors are unearthed almost yearly, and more and more of our family tree is being pieced together. At the same time, scientists are being forced to defend and explain their field of study to Creationists, who have already made up their minds that science and religion are automatically enemies.

The most impressive display of human evolution I’ve ever seen was at the National Museum of Ethiopia in Addis Ababa. It has a huge collection of fossil hominids, including Lucy, an Australopithecus afarensis who lived in Ethiopia 3.2 million years ago. One room shows the precursors to modern humans arranged in chronological order to show how primate-like traits gradually gave way to a more human appearance. This is also done with other animals like the horse and hippo. Anyone looking, really looking, at these displays will have a hard time dismissing evolution as some sort of conspiracy on the part of Godless scientists, many of whom are actually devout Christians.

Photo courtesy Brett Eloff.

Was this strange stone a prehistoric calendar?

by Sean McLachlan on


This odd stone may look like an unusual product of nature, but it’s actually a monument from about 4,000 years ago called a menhir. Archaeologists have long debated what menhirs were for, perhaps boundary markers or gravestones or something else. Now experts are saying this one, at Gardom’s Edge in the Derbyshire Peak District, England, may be a prehistoric calendar.

Archaeoastronomers, who study astronomical alignments in ancient monuments, studied the stone and found that where the sun hit the slanted side may have acted as a marker for seasons. Other prehistoric remains are nearby, including the mysterious carvings shown below.

Local Bronze Age people are believed to have kept their herds in the higher hills during summer and moved to the warmer valleys when winter set in. This handy calendar would have told them when to move their herds. While the researchers say this sundial may be unique, some other megalithic monuments have astronomical alignments, the most famous being Stonehenge. Megalithic monuments such as stone circles and menhirs can be found all over the British Isles and make for some interesting stops while hiking. Trails such as the Ridgeway Trail pass by several.

The Peak District is one of England’s most beautiful natural spots and Gardom’s Edge is a favorite spot for rock climbing.

[Images courtesy artq55 via flickr]

Excavations at ancient city of Perge in Turkey celebrate 65 years

by Sean McLachlan on


Archaeological excavations at the ancient city of Perge in southern Turkey have reached their 65th year, the Hürriyet Daily News reports. This makes them the longest-running excavations in a country with a wealth of ancient sites.

Perge (aka Perga) is in Turkey’s Antalya province and was founded 3,500 years ago by the Hittites. It became a prosperous Greek colony like Ephesus and Pergamon and was for a time under Persian rule. Many of the surviving remains are from the Roman period. In the early days of Christianity, St. Paul preached there (Acts 14:25). Several interesting monuments can still be seen such as a theatre, a stadium, two city gates, and a temple to Artemis.

The UNESCO World Heritage Site is so massive that more than a half century of digging has only uncovered a quarter of it. The current project is to restore many of the columns that once lined the streets.

Perga is at one end of a challenging 300+ mile trek called the St. Paul Trail that cuts diagonally across the country.

For more information and photos, check out this Anatolian travel page.

[Photo courtesy archer10 (Dennis) via flickr]

Amazing photographic animation of Cassini’s Saturn flyby

by Sean McLachlan on


The Cassini unmanned probe to Saturn has been a resounding success. A joint project between NASA, the European Space Agency, and the Italian Space Agency, it’s been studying the ringed planet since 2004. Cassini has been sending back detailed images of Saturn, its rings, and its moons and expanding our knowledge of the solar system.

Check out this amazing video made up of hundreds of thousands of Cassini photographs put one after another to recreate the flyby. There’s no CGI, no trick photography, these are all real images that, as the folks over at Tecca point out, are every bit as good as anything Hollywood can create us. This film is actually a preview of an IMAX feature currently under production by the nonprofit Outside In.

Before it got to Saturn, Cassini also flew past Venus, an asteroid, and Jupiter. I’m hoping those images will be in the movie too.

While I’m not going to be putting on my backpack and heading to Saturn anytime soon, images like this get me in the mood to travel. It’s that sense of exploration, learning about the unknown, that drives us to reach into space and see what’s out there. Cassini may be just an unmanned probe, but through the images it sends back we can all travel with it.

Can stem cell research save endangered species?

by Sean McLachlan on

New advances in stem cell research are giving hope in the fight to save endangered species.

Scientists have created stem cells for two endangered African species–the northern white rhino and the drill monkey. They “reprogrammed” skin cells to make them revert to stem cells, an early stage of cell development in which a cell can develop into different types of specialized cells.

It’s hoped that one day these stem cells could be made into sperm and eggs, leading to test tube babies that could bolster dwindling populations of some species. This has already been achieved with laboratory mice.

The white rhino used to be a favorite of safari goers and, unfortunately, big game hunters. There are probably none left in the wild, and only seven in captivity. These rhinos are the poster children of how tourism can hurt the environment.

This stem cell breakthrough is good news. With Obama scrapping tighter smog regulations and China discovering just how much they’ve screwed up their environment, we can’t rely on our so-called leaders to get us out of this mess. While environmentalists say we all need to change our attitudes in order to save the planet, that’s unlikely to happen. In fact, science is the only part of society that regularly advances. Common sense, foresight, and wisdom sure don’t.

Here’s hoping the scientists can give us a world where our children don’t have to go to a zoo to see wildlife.

[Photo courtesy Wikimedia Commons]