I’ve spent more time than most observing ants, and I’ve come to find them ‘cute’ – something few other people understand, and that is often hard to convey. So it’s nice to find a paper that offers the opportunity to give people a glimpse into the cuteness I see in ant behaviour. Ants clean the […]
I’d like to talk about a very important issue, very close to my heart, and one that I think needs greater public awareness – the definition of the word ‘bug’. See, people think they can just throw the word bug around willy-nilly. Anything small, flying or irritating, is a bug. Any pest, is a bug. […]
Question: What are the effects of yoga and meditation on the brain? (Asked by @leximills)
Answer: Yoga and meditation have effects on physiology, brain chemistry, and cognitive processes; these vary depending on the exact type of practise being performed and how long a person has practised it for. Studies of brain activity confirm that meditation can achieve a state of calm, thoughtless awareness, by suppressing brain regions involved in external attention and irrelevant information, and activating brain regions involved in internalised attention and positive emotions. Meditation is thought to activate the parasympathetic-limbic pathways, reducing heart rate, lowering blood pressure and slowing breathing. Meditation practises can fundamentally change the shape, structure and function of the brain – reinforcing neural networks, developing particular brain regions and influencing the production of key neurotransmitters and hormones in the brain related to attention, self-awareness and emotional control. Yoga has far-reaching effects on the body, reducing inflammation, boosting mood and making long-term practitioners feel more awake. It may even speed up learning in childhood and slow the natural cognitive declines that come with ageing. However, our understanding of the effects of meditative practises on the brain and body is still in its infancy – much more work remains (especially large-scale, carefully controlled trials).
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A guest post for Curious Meerkat by Emily Folk.
Have you ever considered a world without elephants? This is a world we’re heading toward with the profound level of poaching that has occurred. As a result of almost institutionalized poaching over many decades, we have decimated the population of wild African elephants to between 400,000 and 600,000 individuals.
The Ig Nobel Prizes is one of my favourite events of the year, and this year the winning research is particularly great. On the 14th September, The 27th First Annual Ig® Nobel Prize Ceremony & Lectures took place at Harvard University in Massachusetts. In case you’re not familiar with the awards, they were set up in 1991 to celebrate research that makes you laugh, and then makes you think. Here are this year’s awards:
I’d like to talk about a problem. It might seem like quite a small problem, but it’s a pervasive one. That problem, is salad.
Yes, that’s right, I said salad. Not high on the list of major world perils, but perhaps it should be. I mean, for starters, it’s everwhere. Lurking in every supermarket-bought sandwich, mocking you from the side of every pub lunch, withering beneath every take-away spring roll. And that sad bit of salad that came with your meal, that you never even for a moment considered eating, has caused a surprising amount of damage to the environment.
You might have heard of the #360papers challenge – to read one journal article a day for a whole year – you might be less familiar with the related #230 papers challenge. This makes the more realistic goal of reading one journal article each working day of the year, which is apparently 230 days in total (I haven’t checked their maths). This is a record of my feeble attempt to reach this lofty goal – I will update every ten articles or so and try to give a one sentence summary (or link to an article or a longer blog).
Last updated: 19.08.17
New gene editing technologies have revolutionised genetic science, but social insects like ants have proved difficult to genetically modify because of their complex lifecycle and social structure. Now, two separate labs have succeeded in using the CRISPR-CAS9 system to genetically modify two unusual ant species, switching off genes and disrupting their social behaviour in the process.
Scientists bring marine plankton back to life to study past climate change
Phytoplankton such as are responsible for half the global primary production (GPP), and some form resting cysts that can lie dormant in marine sediments for up to a century. Earlier this year, scientists succeeded in making use of these cellular time-capsules to understand changing ocean conditions in a Swedish fjord.
Dinoflagellates are single-celled marine organisms, many of which are able to photosynthesis. They can be useful indicators of environmental change because they are abundant, have short life cycles and are highly sensitive to temperature, salinity and the availability of nutrients and / or sunlight.
Colour exists on a continuum, and yet human language is surprisingly consistent in how it categorises colours.
Previous studies have found that infants at the age of four months old can distinguish the basic colour categories common to many languages (e.g. blue, red, yellow), suggesting there is a biological basis to our color categories. However, these studies have focussed on just a few color categories that are important in English.
Infant mongooses rely on adults to escort them as they learn to forage. A new study from the University of Exeter reports that adult mongooses show no preference for their own offspring when choosing a pup to escort, and the authors suggest they may not be able to tell their own kin apart.