Fun fact: trilobites were able to see thanks to eyes made of calcite instead of soft tissue. YouTuber Thunderf00t shows off a cool fossil and explains the phenomenon.
Interestingly though the trilobites eyes were made of stone, calcite to be exact, so there are many examples of fossilised trilobite eyes. You can get a trilobite fossil with amazing eye detail on ebay for about 50USD. From looking around, the trilobites from Morocco seemed the best to me. It was long thought that the calcite eye disappeared with the trilobites until it was recently discovered that brittle stars have many calcite 'eyes' all over their exoskeleton. Although it should be said theses 'eyes' are tiny!
Writing for the New York Times, Heather Murphy has a fascinating story about the unexpected results of a bone marrow transplant. When a patient receives a bone marrow transplant, the patient’s own cells are destroyed and replaced with cells from a donor. Thereafter, the patient is a “chimera,” with two sets of DNA. It’s believed […]
The Australian Acoustic Observatory project, described by its creators as a kind of “Google Street View of sound,” is a new acoustic sensor network of hundreds of microphones and digital audio recorders distributed across multiple remote ecosystems on the continent. The solar-powered system will record animal and natural sounds continuously for 5 years. According to […]
With all the revolutionary tech that’s out there, it’s pretty sad that finding a simple stud in your wall can feel like dowsing for water. This can be equally true whether you’re using a magnetic finder and it’s reliance on “feel,” or an electronic unit that can give fuzzy readings (especially when the batteries are […]
Do you have any Star Wars fans on your list? Given the reach and output of its new corporate masters these days, it might be easier to ask if there’s anyone out there who isn’t a Star Wars fan. So let’s narrow it down further: Do you know a Star Wars fan who likes to […]
There’s much ado about coffee brewing methods these days, but most of us – at least on the busy weekdays – just want our morning joe to be consistent, easy, and most of all, fast. If that sounds like anyone on your Christmas list, they’re going to get a lot of mileage out of the […]