What’s a Million Years between Friends?

“Most of us these days accept that life has followed some kind of evolutionary process that has played out over a very long period of time. However, getting our heads around the enormous lengths of time available for the evolution of life is next to impossible, even for those who… Read More

A Subtlety of Earth’s Gravity and its Rotation

As is well known, Earth is not a perfect sphere. Because of its rotation, the centrifugal effect makes it bulge slightly at the equator and slightly squashed at the poles, to produce what we refer to as an ‘oblate spheroid’.  However, the centrifugal effect also applies to… Read More