Africas malaria resurgence isnt down to global warming
Climate in upland East Africa hasnt changed yet.
© Getty Images
Climate change cannot explain the growth of malaria in the highlands of East Africa, say researchers. Drawing simplistic links between global warming and local disease patterns could lead to mistaken policy decisions, they warn.
Drug resistance, or the failure of the health-care system to keep pace with population growth, are more likely culprits for malarias rise, say Simon Hay, of the University of Oxford, and his colleagues. These should be the focus of public-health efforts, they urge. Malaria kills between one million and two million Africans each year.
Blowing hot and cold
"Theres been some terrible bandwagon-jumping and misdirection of resources that could be spent learning how to control mosquito-borne disease," says Reiter. "We urgently need to cool down the rhetoric and start to look objectively at what the factors behind their recent resurgence are."
But this study does not prove that theres no link between climate change and the growth of malaria in these regions, says Jonathan Patz, who studies climates relationship with health at Johns Hopkins University in Baltimore.
Some regions of East Africa do show warming trends, he says. That the team considered climate over a much longer period than they analysed disease could have confused their analysis, he believes.
"I think theres a mismatch between the results and the strong conclusions of this paper," says Patz. He feels its still not clear whether climate change has influenced disease.
Whats needed, he says, are studies that consider climate, disease statistics and social factors simultaneously. These may help to predict the effect on malaria if climate in upland East Africa does change.
JOHN WHITFIELD | © Nature News Service
In times of climate change: What a lake’s colour can tell about its condition
21.09.2017 | Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)
Did marine sponges trigger the ‘Cambrian explosion’ through ‘ecosystem engineering’?
21.09.2017 | Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum GFZ
At the productronica trade fair in Munich this November, the Fraunhofer Institute for Laser Technology ILT will be presenting Laser-Based Tape-Automated Bonding, LaserTAB for short. The experts from Aachen will be demonstrating how new battery cells and power electronics can be micro-welded more efficiently and precisely than ever before thanks to new optics and robot support.
Fraunhofer ILT from Aachen relies on a clever combination of robotics and a laser scanner with new optics as well as process monitoring, which it has developed...
Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.
A warming planet
Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.
The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
19.09.2017 | Event News
12.09.2017 | Event News
06.09.2017 | Event News
25.09.2017 | Power and Electrical Engineering
25.09.2017 | Health and Medicine
25.09.2017 | Physics and Astronomy