Search Results for rosling

6.3 Defense Against Infectious Disease

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This is a brilliant TED Talk by Bonnie Bassler on bacteria and how we interact with them:

Click here for the link to AHL content.


Here are some very clear clips for the immune responses to infection, starting with a really well done explanation of Burnet’s Nobel-winning clonal selection theory:

If you like that, check out some more of the videos from the Walter and Eliza Hall Institute of Medical Research.

Try this animation and quiz: McGraw Hill Online Centre

And another Nobel-winner, the cellular response from


Phagocytosis in action:

Neutrophil (phagocyte) chasing a bacterium:

The humoral, though not funny, response – from the LifeWire

How does the leukocyte know where to go? Chemotaxis – from Wisc-online


Once you’re sure of how it all works, can you narrate this medical animation?


And for another of the body’s defenses: Natural Killer Cells


Loads more links to clips at North Harris College.



Case Study: Newborn baby ‘cured’ of HIV with rapid detection and ARV treatment. Great introduction to the topic from the New York Times.

Elizabeth Pisani discusses rational behaviour in HIV infection, with lots of Indonesia references:

Hans Rosling, my hero, explodes the Africa=HIV myth using real stats:

90-day time-lapse of a woman on modern anti-AIDS medication:

Could the design of a condom improve HIV prevention? Here is a South African company who hope so: Pronto Condoms. For  a video of how it works (on a plastic model), click here.

Mosaic Science Magazine talks to Françoise Barré-Sinoussi about how she identified HIV as the cause of AIDS, her receipt of the Nobel Prize, and the latest efforts to prevent, treat and manage HIV. [Photo Credit: CC-BY: Ben Gilbert/Wellcome Images]. Click to read.


Antibiotics & Resistance

This is a scary graph. Read this article from Wired and see if you can work out why.

New Antibiotics - from Wired magazine

New Antibiotics – from Wired magazine

And another one from Wired: “Superbugs found in New Delhi’s water and sewage,” which claims that antibiotic resitant genes (NDM-1 enzyme) have appeared in Vibrio cholerae.


So what could happen (and what has in the past) when there is a pandemic? This enlightening BBC Horizon documentary sheds a little light. Get comfortable:

Key terms: immune, macrophage, phagoctosis, leukocyte, lymphocyte, antibody, antigen, epitope, specificity, B-cell, clone cell, clonal selection, immunity, antibiotics, virus, bacteria, fungi, protozoa, pathogen, challenge, response, HIV, AIDS, mucous membranes.

TED – 50 million views young (and the best graphs EVER)

TED (Technology, Education, Design) has racked up 50 million views since 2006 and is proof that people can use the internet for more than just celebrity gossip and the dodgy sites. They now have a highlight reel of their top ten talks, including the $40 SMART Board, some oceany greatness and lessons learned while having a stroke. Ken Robinson’s talk is up there (are schools killing creativity?), and one of the coolest bits of statistics you’ll ever see from Hans Rosling:

After watching that, you should absolutely must head straight on over to and be dazzled.

You can even access the gapminder graph and manipulate both axes. Awesome.

Statistical Analysis for Biologists

From - science and maths webcomic

From – science and maths webcomic

First up: What are statistics?


Here is the presentation with information on Excel and a worked set of examples with hummingbirds, to tie in with the natural selection topics. Also, skip on over to the Excel StatBook resource, for a set of examples, tables, graphs and significance tests that you can play with.

This presentation was used in my class as a collaborative task. I shared a copy with each student for them to make notes. If you want o use it, I would recommend doing your own before-after quiz. Ours looked at pre- and post-assessment data on the Classification unit.

And Geoff Browne kindly gave permission to upload his t-test powerpoint to slideshare:

Updated Essential Biology 01 Statistical Analysis

T-test practice (printable GoogleDoc here):



Gapminder awesome human population stats tool. Watch Hans Rosling’s brilliant Joy of Statistics here. For a short clip:

And this enlightening talk from Han Rosling: No More Boring Data!

Click here for a funny article on the 9 circles of scientific hell.

Also, play with this: Google Correlate.


Using your calculator:

Using the TI GDC (from Click4Biology)

Using the Casio pdf download (from

– Using the TI NSpire:


Statistics in Action:

‘Real’ acupuncture no more effective than fake acupuncture, from ScienceDaily

Evidence Based Medicine First, medical website explaining the false health claims of many alternative medicines.

Here’s a nice profile on Edzard Ernst, the world’s first professor of alternative medicine. He has spent his career trying to get alt-med in line with real science.

Ed Yong, MrT’s blogging hero, writes for Cancer Research UK on the WHO’s verdict on mobile phones and cancer. Correlation vs cause!

Epidemiology: The Science of Cohort Studies. How do we generate lifetimes’ worth of data in studies in medicine? Ben Goldacre’s BBC Radio 4 documentary, Science: From Cradle to Grave. An amazing discipline to work in, and one birth cohort study has been running for over 65 years!


TOK Discussions:

Facebook Gives You Cancer” err…

And another peach from XKCD:

Significance from

Significance from

Correlation, from DogHouse WebComic

Correlation, from DogHouse WebComic

The problem with error bars, from Cheezburger.

Key terms: t-test, mean, variability, data, reliable, significance, sample, excel, calculate, correlation, graph

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