Category Archives: Uncategorized

Tonga Boom! Undersea volcano erupts off Tonga

Imagine being on a fishing boat making a holiday video and then the whole ocean explodes around you. Well that’s not exactly what happened, but it would be a good story…

According to the Global Volcanism Program, this volcano started to erupt on the 16th or 17th March and has been going since. This video shows a team of scientists who took their boat out to the site to capture footage and record local and wide-spread changes. Apparently, no-one has been hurt by the volcano.

To see some aerial photos of the volcano, with coordinates, visit the ASTER volcano archive.

Click on the image below for some great photos from the Guardian.

A spectacular cloud of ash and steam

A spectacular cloud of ash and steam

As you can see, the plume of ash and steam is huge. A line from the AP states “the eruption does not pose any danger to islanders at this stage, and there have been no reports of fish or other animals being affected” – other than by the great big explosion, then.

To learn more about volcanoes in general, visit the Science Education Resource Centre’s Volcano visualisation library. For more about how underwater volcanoes are monitored, check out this flash animation from NeMO Net, from NOAA.

For another good article on vocanoes, click on the image below to see what Wired.com has to say

Mt Cleveland erupting, as seen from space

Mt Cleveland erupting, as seen from space

Muscles and Movement

Click4Biology page here.

Defense Against Infectious Disease megapost

Here we go, Standard Level and Higher Level in one big post:

As always, North Harris College has a great set of links to immunology animations.

Here’s the core, for everyone:

Antibiotics:

Antibiotic action from HHMI

Antibiotic resistance from Sumanas

Interferon, an antiviral medication from the University of Illinois

Antibody prodution:

Simple animation from ccbmd.edu

Retro-style animation and explanation from CellsAlive.com

More detail (better for HL) from McGraw Hill

HIV & AIDS:

Have a go at the Rediscovering Biology online text and animations

Here’s an in-depth look at the HIV virus from rnceus.com

And a good look at the HIV life cycle from Sumanas

You should really read this article on social and economic impacts of HIV

The resources for HIV out there are prolific, so go find them if you’re still curious!

And to set your mind at ease, the best HIV website: www.avert.org

Additional Higher Level content:

Start off with some of these resources from Bio-Alive.com

Blood clotting:

Explanation and animation from HowStuffWorks and ADAM

And from the Indiana Haemophilia and Thrombosis Centre

The Specific Immune Response

Great introduction by RM Chute

This one from McGraw Hill is really clear (we don’t need the bit about cytotoxic cells), and CancerResearch.org have these animations about the cellular response and humoral response.

Here’s a nice one about the action of antibodies from edumedia (but you’ve got to pay), and a better one on the action of immunoglobulins (antibodies) from WHFreeman.

Monoclonal Antibodies:

Here’s a simpe YouTube explanation:

Good animations from McGraw Hill and  Sumanas.

And when you’re through all that, have a go at a Virtual ELISA test from HHMI

You might even feel like a pregnancy test.

Vaccination

Here’s House MD to knock some sense into you:

And on  more serious note – the NHS has a very clear website with animations.

Girls might want to know more about the HPV Vaccination and its protection against cervical cancer.

And for more readers and in-depth stuff:

The Media’s MMR Hoax from BadScience.net is the perfect reader for discussion of the perceived dangers of the MMR jab. You could pair it with this video (edited by an anti-MMR activist).

Go for Rediscovering Biology’s Emerging Infectious Diseases online course.

Or find out more about parasitology, check out the Atlas of Parasitology or check out this video:

Parasites – Eating Us Alive“:

Life After People

Thanks to Bro Taylor for this one.

The History Channel ran a special called “Life After People“, about- surprisingly enough- life after people. He described it as “like ‘I Am Legend’ but not rubbish.”

What would happen if we all disappeared? How long would it be before animals moved back into the cities? how long would electricity keep being generated? Would buildings crumble?

It helps us realise that we are never in a position to ‘save the world’ – only life as we know it. The world will be fine long after we are gone. Why not visit their microsite and see if you would survive?

The save tag is not enabled on the GoogleVideo page, but you can save it by clicking here (via KeepVid).

Proteins (AHL & C.1)

After the Carbohydrates, Lipids and Proteins last week, we’re taking a closer look at Proteins and their structures.

Here is the class presentation – click the shadowed images for links to animations:

Check that you know the different levels of protein structure, including the roles of hydrogen bonds and disulfide bridges. Think about how the properties of the R-groups on amino acids cause the protein to fold up in a set configuration.

Make sure you can give examples of fibrous and globular proteins and that you can name some examples of uses of proteins that are not structural or related to the plasma membrane.

The revision notes from Click4Biology are here.

Five things you need to know about the oceans

Homework for my HL class:complete the Fisheries Management sheet and make notes on international measures that can be taken to promote conservation of fish stocks.

Resources: watch this, read the article and then check the webpage at MarineBio.org.

Science Daily – News and Videos

Science Daily is another Science news service with RSS feeds and a video news service. It has a wide range of regularly updated resources and articles are generally student-friendly. One nice touch is the auto-cite tool at the bottom of each article – students can choose MLA or APA bibliography styles and just copy/paste the information into their work.

Michael Crichton 1942 – 2008

I’ve been slow on posting this, but here goes…

Michael Crichton died of cancer last week, aged 66. No further details of his illness have been released.

Most good science geeks will have read at least one of his novels in their time, or at least seen one of his many movies or TV shows. Crichton was a prolific writer and TV/movie producer – often focusing on popularising science and raising awareness of the current hot topics in research. It seems kind of fitting that in his last week, details of the successful cloning of dead mice were published – the basic premise of his mega-blockbuster Jurassic Park from the nineties (just replace the mice with Tyrannosaurus rex).

It’s fair to say that without his ideas and ludicrous action sequences, the general public may still be unaware of some of the steps science is taking into the future.

Anyway, you can find out all you want about him on wikipedia or his website, so there’s no point regurgitating it here. You might, however, like this video interview with Charlie Rose, filmed with the release of genetic ‘thriller’ ‘Next‘. He discusses global warming, corporate ownership of disease and why ‘Next’ is terrible to read (apparently it’s because he was ‘picking up stories like the genome picks up junk DNA’).

Stumble It!

Reproduction in Angiospermophytes

Here is the class presentation:

This is a quick topic, though it has some tricky bits in.

I’d recommend a review of transcription and translation when going through the photoperiodism section.

Now we’re finished with the unit, all of the presentations have been posted on the Plant Science Page.

Cell Division

Again, there is a load of resources on the internet for this topic, many of which have been linked in the presentation below:

Here’s the Click4Biology page.