1,677 search results

Why could phosphorus depletion leave us all hungry?
Society, Politics & Law

Why could phosphorus depletion leave us all hungry?

...prevented famine. But thinking about phosphorus as a human right does highlight that the right to food cannot be enforced by simply mandating access to an end product. It will also necessitate developing agricultural systems that are managed in a way that is both equitable and sustainable. This article was originally published by SciDevNet in 2014 under a CC-BY licence...
Building over farmland: Will city expansion leave the world hungry?
Nature & Environment

Building over farmland: Will city expansion leave the world hungry?

...systems will be affected. “I think this is going to be context dependent. Whether we have food security issues in cities depends on how dependent the city is on locally produced versus imported foods, and also the biogeography that the city is located in,” Ramankutty says. He emphasises that loss in global crop production can be easily overcome by “small shifts in...
‘Citizen sensing’ and new forms of environmental monitoring
Society, Politics & Law

‘Citizen sensing’ and new forms of environmental monitoring

...systems. Environmental monitoring is not only conducted by scientists and other experts, but also by countless volunteers around the world. The area of ‘citizen science’ has grown over the past few decades due to a policy drive for public participation in science, a greater availability of sensor technology, and the longstanding willingness of people to become...
How many different types of smile are there?
Health, Sports & Psychology

How many different types of smile are there?

...System, written with Wallace V Friesen, seeks to create an atlas of nearly all possible human expressions. Ekman says, in his book Telling Lies, that their technique for measuring the face can distinguish over 50 different smiles. Confused? You’re not the only one. Perhaps the best approach is to just grin and bear it… This article was originally published by Mosaic...
Golden Globe Ocean Race: The landscape above and below the sea
Science, Maths & Technology

Golden Globe Ocean Race: The landscape above and below the sea

...system of our planet. The oceans also contain very deep valleys, known as trenches, where ocean crust is being destroyed. You may have heard of the famous Mariana Trench, about 11 km (nearly 7 miles!) deep in the ocean. The famous film maker James Cameron travelled to the deepest place on Earth! Transcript The average swimming pool deep end is about 5m deep. How many...
What is Talk Factory?
Education & Development

What is Talk Factory?

...system. [A screenshot from the app shows a bar graph with green. orange, yellow and blue bars against a grey background. The vertical axis shows the number of occurrences and the horizontal axis shows the kind of behaviour, ranging from "explain reasons" to "interrupt".] What do teachers say about Talk Factory? Feedback from teachers is overwhelmingly positive: “The...
Prospecting for water on the Moon
Science, Maths & Technology

Prospecting for water on the Moon

...System. These areas act as vast ‘cold traps’: many chemical substances such as water, other ices and organic compounds delivered to the Moon by asteroid and comet impacts would migrate to the poles and accumulate there in a permanent deep freeze. Our Moon may therefore be witness to billions of years of history of water and other important molecules in the vicinity of...
Educational leadership at local and community level: Supporting ‘Quality Education’ even in times of adversity
Education & Development

Educational leadership at local and community level: Supporting ‘Quality Education’ even in times of adversity

...system. Local leaders’ responses to the uncertainty about when children will return to school have meant looking for creative ways to keep learning going. For many in low-income countries the solutions have focused on low-tech approaches (e.g. radio broadcast in local communities). A recent blog post by Power (2020) on Activating local study-groups for children’s...