PLCscience

"How kidneys keep us balanced" is an edited recording of a video conference with HSC biology students presented by Dr Sean Kennedy, a clinician and researcher at the School of Women's and Children's Health, University of New South Wales.

Sustainable Schools NSW aims to support all schools, their partners and the community in realising a positive environment vision. Through careful planning your school community can implement, review and celebrate sustainability education initiatives. If you need to log in the user name is 'lhancock' and password is 'plcscience' however most parts of the site are accessible without logging in.

See May 2 for Transit of Venus. Great for students and then a follow-up test on the site.

The evolution of the peppered moth over the last two hundred years has been studied in detail. Originally, the vast majority of peppered moths had light colouration, which effectively camouflaged them against the light-coloured trees and lichens which they rested upon. However, because of widespread pollution during the Industrial Revolution in England, many of the lichens died out, and the trees that peppered moths rested on became blackened by soot, causing most of the light-coloured moths, or typica, to die off from predation. At the same time, the dark-coloured, or melanic, moths, carbonaria, flourished because of their ability to hide on the darkened trees.

Rubidium dropped in water!!!

A demonstration of Ernest Rutherford's gold foil experiment. Human beings represent alpha particles, a mattress represents gold foil.

What causes sea level rise? Why is the average sea-level rise around Australia higher than the global mean? And why is the sea rising at different rates around Australia?

The "Fukushima disaster" clouds the merits of nuclear power, argues Martin Freer. The dramatic events that unfolded at Japan's Fukushima Daiichi nuclear-power plant after last year's tsunami are commonly referred to as "the Fukushima disaster." We need look no further than this description to begin to understand the significant misconceptions that surround nuclear energy.

Egg geode experiment: growing crystals in egg shells

This Uni of Qld site explains how to evaluate the reliability, accuracy and validity of secondary sources.