Risultati di ricerca
28 nov 2012 · Animals that can count. 27 November 2012. By Jason G Goldman, Features correspondent. ... The ants calculate the direction they walk by calculating the angle of their path relative to the position ...
30 nov 2009 · Wikipedia. 214K views 14 years ago. Desert ants have a nifty way of finding their way back home after a foray out of the nest to find food -- they count their steps. To prove it, some...
- 5 min
- 215,3K
- NPR
Explore the astonishing discovery that ants use an internal pedometer to navigate their way back to the nest. This short reveals how experiments with ants' l...
25 nov 2009 · Can ants count? Not out loud they can't. Not the way you and I count. But an ingenious experiment conducted in the Sahara suggests maybe ants do count. Media no longer available. Credit:...
- Robert Krulwich
- Carnivorous Plants That Keep Track
- Pigeons That Sort from Lowest to Highest
- Fractals For Marine Predators
- Step-Counting Ants
- Plants That Can Divide
- Birds That Can Count
- Mental Sums by Macaques
Knowing how to count is not only a useful skill if you are a thinking biped. For example, the Venus flytrap (Dionaea muscipula) calculates to decide when it’s worth catching a prey.This carnivorous plant, which only resorts to eating insects or spiders as its “plan B” when soil nutrients are scarce, has to think twice before capturing prey because ...
Despite their reputation for being dirty and clumsy, pigeons can count up to at least nine. This was demonstrated by Damian Scarg, of the University of Otago (New Zealand), in a study that was reported in the journal Science. What is surprising is that not only did they know how to count up to nine, but they were also able to apply an abstract rule...
Fractal mathematics, with which Benoit Mandelbrot surprised the world in the 1980s, is not alien to either sharks nor swordfish. According to a British study published in the prestigious journal Nature in 2010, these marine predators follow a fractal pattern called Lévy flight motion, which consists in alternating a series of short random Brownian-...
Desert ants (Cataglyphis fortis) have a built-in pedometer to ensure that they always find their way back home. German scientists from the University of Ulm discovered a decade ago that these insects have an internal pedometerintegrated into their nervous system, which “resets” every time they return to the nest. Moreover, they have such well-measu...
The most studied plant in laboratories around the world over the last forty years, Arabidopsis thaliana, can add a new milestone to its list of achievements – it has been discovered that it can divide. During the night, when there is no sunlight to convert carbon dioxide into sugars and starch, it has to measure out its starch reserves very careful...
The arithmetic skills of the New Zealand robin (Petroica australis) are equally surprising. Scientists at the University of Wellington showed that if one of these birds is shown a box to which worms are added or removed, and then is allowed to enter the box where one of the worms has been hidden with a trapdoor, the Robin is not fooled and will kee...
Without needing to attend school, non-human primates dominate mathematics. Specifically, an experiment of the Center for Cognitive Neuroscience at Duke University (USA) revealed that macaques can do mental calculations and pass a test of nonverbal arithmetic. If one of these monkeys is shown on a screen two boxes containing different numbers of dot...
25 lug 2010 · Part of the show How do Ants Count? ANTS-REMOVE-DISEASED-BROOD.jpg. Credit: Chris Pull / eLife. Play Download. Question. In a recent podcast you talked about spiders and ants counting steps etc. How does anyone know/find out whether these creatures count? And if they do, how do they do it? What would they use that's equivalent to our number system?
26 nov 2009 · These researchers had a hypothesis that ants can count and devised an experiment to test the hypothesis. Based on their assumptions, the evidence from the experiments support their hypothesis. Your hypothesis is that it's not counting but something else.
