Science in School is published by EIROforum, a collaboration between eight of Europe’s largest inter-governmental scientific research organisations. This article reviews some of the latest news from the EIROforum members (EIROs).
Although a lot of people know that the World Wide Web was invented at CERN, not many know that the organisation has also played a central role in developing the Internet in Europe. In 1988, CERN convened the historic meeting that led to the creation of the RIPE (Réseaux IP Européens), which still allocates IP addresses in Europe. In the early 1990s, CERN was the largest Internet hub in Europe, managing more than 80 % of the international bandwidth available on the continent.
It was also one of the founding members of the Internet Society, a global organisation dedicated to ensuring that the Internet stays open, transparent and defined by its users. The society celebrated its first 20 years at a conference held in Geneva, Switzerland, from 22 to 24 April 2012, with CERN as a special guest.
Fusion energy researchers at the Joint European Torus (JET) continue to reap rewards from the 2009-2011 upgrade. The new metallic walls in the reactor have led to much cleaner plasma, without the undesirable radiation caused by contaminants from the previous carbon wall. In addition, the new heating systems can deliver 40 % more power to the plasma in 50 % longer pulses.
Nonetheless, turbulent events known as disruptions – in which the energy of the plasma escapes its magnetic cage in one spot and hits the wall – still occur occasionally. Because the new wall has a lower melting point than the previous one and higher plasma temperatures are now being used, a protection system had to be developed before the full heating power could be applied. This will mitigate disruptions because the associated heat levels and magnetic forces can be extremely high.
Recent tests have shown that the protection system successfully detects disruptions and then quickly puffs argon gas into the vessel.
The argon rapidly ‘contaminates’ the plasma, radiating energy in all directions, thereby diffusing the hot spot. The JET team now has the confidence to turn the new system up to record power levels in the coming months.
Scientists at the European Molecular Biology Laboratory (EMBL) have filmed the development of a fruit fly embryo from when it is about 2.5 hours old until it crawls away from the microscope as a larva, 20 hours later. In the video, you can watch as cells on the embryo’s belly dive in to form what’s known as the ventral furrow. Other cells can then be seen moving around the embryo’s rear end to its back, in a process called convergent extension. Later, when an opening appears in the embryo’s back, you can see the surrounding cells close the gap in a process known as dorsal closure.
To obtain the video, the scientists developed a new microscope called multi-view SPIM, which enables them to image rapid biological processes in thick samples in unprecedented detail. They can obtain a high-quality 3D image of a fruit fly embryo in just a few seconds. Using such fast imaging, the movements of every nucleus in the early embryo can be recorded.
In the future, the scientists would like to use their new microscope to investigate how organs and tissues form, not only in the fruit fly but also in other organisms.
The European Space Agency (ESA) has recently joined forces with the UK’s Faulkes Telescope Project to allow students to support the Agency’s Space Situational Awareness (SSA) programme. This programme keeps watch over space hazards, including disruptive space weather, debris objects in Earth orbit and asteroids that pass close enough to Earth to cause concern.
Any attempt to survey and catalogue hazardous asteroids faces a number of difficulties. They are often jet black or at least very dark, can approach rather too close before anyone sees them, and are often spotted only once and then disappear before the discovery can be confirmed.
So ESA is turning to amateur astronomers to ‘crowd-source’ observations as part of Europe’s contribution to the global asteroid hunt. These efforts will greatly enhance asteroid-spotting for the SSA programme, enabling detection of fainter objects and tracking from a global telescope network.
The Faulkes Telescope Project offers free access to robotic telescopes and a fully supported education programme to encourage teachers and students to engage in research-based science education.
Supporting ESA’s SSA programme is just one of the many possible astronomy projects that schools can engage in.
The European Southern Observatory (ESO) is to build the largest optical / infrared telescope in the world. The ESO council approved the European Extremely Large Telescope (E-ELT) programme at its meeting in Summer 2012, pending confirmation of four ad referendum votes. The E-ELT will be a 39.3 m segmented-mirror telescope sited on Cerro Armazones in northern Chile, close to ESO’s Paranal Observatory.
Operations are planned to start early in the next decade, and the E-ELT will tackle some of the biggest scientific challenges of our time. “The E-ELT will keep ESO in a leading position for decades to come, and lead to an extraordinary harvest of exciting science,” said ESO council president, Xavier Barcons.
Insect pollination of plants is a relatively recent event in Earth’s history – water and wind did the job before the little creepy-crawlies arrived. But once they did, a mutual evolutionary success story started: today, by far the majority of flowering plant species are pollinated by insects, which transport the pollen from male to female plant parts. But how did it all begin?
Flowering plants are a comparatively recent group, evolving from gymnosperms. These ‘naked seed’ plants have cones instead of flowers, and include today’s conifers and Ginkgo. Although most gymnosperms used wind pollination, some already used insects as pollinators – well before the evolution of the first flower.
Two pieces of amber some 110 million years old from northern Spain revealed the oldest record of insect pollination, when scientists used X-rays at the European Synchrotron Radiation Facility (ESRF) to produce detailed images of two newly described species of tiny insects covered with pollen grains. Gymnopollisthrips minor and Gymnopollisthrips maior are thrips (Thysanoptera), minute insects that feed on a variety of plant and animal sources, including pollen. These particular thrips are thought to have fed on the pollen of Cycadopites, a now extinct genus of gymnosperm that is related to cycads – the plants that look like a giant cross between palm and fern trees and make up the ‘forests’ in dinosaur films.
European XFEL has reached an important milestone. The construction of the network of tunnels, totalling nearly 5.8 km in length and extending 3.4 km from Hamburg-Bahrenfeld to Schenefeld in Schleswig-Holstein, Germany, is now finished.
As Professor Massimo Altarelli, managing director of European XFEL, commented, “The tunnel construction is one of the most difficult building phases.
We are glad that this task could be completed according to plan, and that we could keep costs within the tight budget we set at the time the contract was awarded.”
Tunnel construction began in July 2010. In January 2011, a second boring machine started to excavate the five photon tunnels leading into the experiment hall. On 14 June 2012, more than 400 people – including guests from politics and science as well as staff from collaborating companies – celebrated the completion of the tunnel construction.
This year, the world’s flagship neutron science facility marks the 80th anniversary of James Chadwick’s famous discovery. On 1 June 2012, it will be 80 years since the publication of Cambridge physicist James Chadwick’s famous Nobel Prize-winning paper, which proved the existence of the neutron. Chadwick’s discovery led to the development of neutron research, which continues to make breakthroughs across the sciences.
This year also marks the 40th anniversary of the use of Chadwick’s famous particles at the Institut Laue-Langevin (ILL).
As Professor Andrew Harrison, director general of the institute, explains: “Thanks to Chadwick’s discovery and the technology developments that have taken place since, ILL can use neutrons as if they were super X-rays, to understand the world at the atomic level and make discoveries that improve our lives. The neutrons we produce and the world-leading instruments that detect them are delivering impact in areas as varied as health care, the environment and engineering, as well as improving our fundamental knowledge of how the world works.”