Human homeostasis: Clarifying the role of the nephron
This video was made for Matric revision, covering the topic Human homeostasis: Clarifying the role of the nephron […]
Human homeostasis: Part 3 – Regulation of carbon dioxide
This video was made for Matric revision, covering the topic Human homeostasis: Part 3 – Regulation of carbon […]
Human Homeostasis: Part 2, water, salts
This video was made for Matric revision, covering the topic Human homeostasis: Part 2, water, salts Hopefully this […]
For the Matrics: Homeostasis 1 – constant internal environment
This video was made for Matric revision, covering the topic Human homeostasis: part 1 – Negative feedback, Glucose […]
The DBE: providing an excellent example of a bad example ...
This is the presentation I gave to DBE workshop in November last year, with the recommendations of the […]
Department of Basic Education: the lazy, incompetent way to do ...
Last year, the DBE announced that it would only examine the CAT curriculum using Microsoft Office, and the […]
If you shoot a lion, you are responsible for your ...
It is interesting how people, via the global social media, have responded to the poaching of Cecil the […]
Thought for the day July 26, 2015
May you find peace and happiness in the real world through reason and science. May your life be […]
Three years with thumbzup – innovation up close and personal
I don’t usually talk about my the work I do. Partly because we are startup and partly because, […]
A moon, two planets and a star
The earth’s moon, Jupiter, Venus, and Regulus all lined up this evening. Regulus is just a faint point, […]
Photos: Marievale Bird Sanctuary
Marievale Bird Sanctuary is a protected area on the Blesbokspruit, located near the East Rand town of Nigel in […]
The crab and the seaweed: how chemicals mediate interactions in ...
Have you ever thought about how chemicals mediate a lot of the interactions that happen in ecosystems? The […]
Designing a university for the new millennium: David Helfand
This is something close to my heart, because if I live long enough and have enough money, I […]
Free Software alternatives to Photoshop and Lightroom: GIMP and digiKam
Background I belong to a number of photography sites and facebook groups, and a common question asked relates […]
For something different: Lithophyllum cuneatum KEATS
And now for something comepletely different: Lithophyllum cuneatum KEATS, a new species that I discovered in 1994, which […]
Seeing the Jewelbox for the first time in the sky
Last night when we went out to photograph Jupiter and Venus, Melissa and I also took a photo […]
A little amateur photo astronomy tonight
I went out with my daughter tonight to see Venus and Jupiter, with thanks to Esther for alerting […]
Giving thanks and pondering the future
Today is Sunday, a day when supposedly over 2.2 billion of the World’s 7+ Billion people are supposed […]
Photography is passion, energy, thought and knowledge combined with light, ...
The title of this post, “Photography is passion, energy, thought and knowledge combined with light, colour, shape, texture […]
Future history of 2015
I went for a short visit to the future, and I came across these history notes. I thought […]
Welcome to my new blog
This is my new blog site, it is replacing my old blog that is still up for now […]