Ari Daniel
👤 SpeakerAppearances Over Time
Podcast Appearances
The result was clear, says University of Cambridge evolutionary ecologist Andrea Manica.
Then, some 15,000 years ago, when the sickle cell anemia mutation arose, which can offer protection against malaria, people's avoidance of the regions with the disease began to break down.
Pacific Kiwele Mutambala, a PhD student at the Université de Lubumbashi, spent a few rainy seasons at the waterfall where he saw thousands of these upwardly mobile fish called shell ears.
CT scans revealed their front fins have an array of single-celled hooks, which they use to grip the rock.
The fish alternate between wriggling rapidly upwards and mostly resting.
The entire ascent takes almost 10 hours.
Mutambala says the findings have conservation implications because cutting off the water supply to this waterfall to fill a dam or for irrigation could harm the fish.
Pacific Kiwele Mutambala, a PhD student at the Université de Lubumbashi, spent a few rainy seasons at the waterfall where he saw thousands of these upwardly mobile fish called shell ears.
CT scans revealed their front fins have an array of single-celled hooks, which they use to grip the rock.
The fish alternate between wriggling rapidly upwards and mostly resting.
The entire ascent takes almost 10 hours.
Mutambala says the findings have conservation implications because cutting off the water supply to this waterfall to fill a dam or for irrigation could harm the fish.
Researchers found that numerous AI models affirmed someone's problematic or wrong behavior about half the time.
To consider the impact, they had 800 participants interact with an AI about a real conflict from their lives.
Those who'd interacted with an affirming AI were 25% more convinced they were right and 10% less willing to do something to fix the situation.
Stanford University computer science Ph.D.
student Myra Chang says that companies and policymakers should work together to fix the problem.