Goodbye Option D: Evolution

When I first started teaching the Diploma, my Head of Science at the time, enthused about Option D - Evolution unit as THE biology unit that best embodies the philosophy of the IBO (and I believe him to be right),  encapsulating the notion of commonality of all,   sharing the same common ancestors. I continued to teach option D for 18 years, and was therefore disappointed to find that the unit has now been broken up and sections removed. No more Human evolution, ...

Life in Antartica = life on Jupiter’s moon?

An American team, a Russian team and a British team is each preparing to do something never undertaken before: to drill through the sometimes miles-deep snow and ice to enter and study one of the hundreds of remarkable Antarctic liquid lakes that, like the microbes, were unknown until very recently. Scientists say these lakes -- mostly freshwater, some containing salts -- remain permanently and surprisingly wet because of the enormous, heat-producing weight of the ice, because of the relative warmth ...

An RNA world

Doubts persist to the possibility of RNA being THE hereditary / genetic material that played THE key role in the creation of life on Earth. However work carried out at the University of Colorado may have shed further light on this. The findings could be a substantial step toward understanding "the very origin of Earthly life," the lead researcher contends. More on the work carried out at the University of Colorado Read more on the meaning of an "RNA world"