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A Flea's Fantastic Jump Takes More Than Muscle | Deep Look
A Flea's Fantastic Jump Takes More Than Muscle | Deep Look Ambakisye-Okang Dukuzumurenyi 28 Views • 5 years ago

Before they can bite your cat or dog, these little "itch hikers" make an amazing leap 100 times faster than the blink of an eye. So how do they do it?

DEEP LOOK is a ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Explore big scientific mysteries by going incredibly small.---Spring is here, and with it, the start of flea season. With the warming weather, people and their pets are spending more time outside — which increases the chances of bringing home a hungry “itch hiker.”While pet owners curse the tiny insects and look for a way to rid them from their homes, it turns out fleas actually perform some remarkable athletic feats, like jumping 50 times their height — the equivalent of a human jumping 300 feet — or leaping so fast that they take off 100 times faster than the blink of an eye.No larger than a sesame seed and flattened side to side, fleas can slip through fur with ease. Their jump is so fast they seem to simply vanish and reappear somewhere else.“It's there and then it's gone,” said Gregory Sutton, a professor of biomechanics at the University of Lincoln in the United Kingdom.

--- What do flea eggs look like?After feeding on blood, adult fleas mate and lay eggs. The eggs drop out of their host animal’s fur or feathers and into their bedding or nest. The eggs are translucent white and very small. At 0.5mm the eggs are about the size of a grain of salt.

--- Why do fleas bite me?Blood is a protein-rich food for fleas. Adult fleas feed on blood before they can procreate.

--- Why does my dog/cat keep getting fleas?Fleas are nest parasites. Their eggs fall from the host animal into its bedding where they hatch. The worm-like larvae feed on organic debris (including the adult fleas’ feces) in the bedding. They then curl up into a cocoon and undergo metamorphosis into their adult form. Flea baths tend to kill the fleas currently on the pet, but there may still be flea eggs and larvae in the pet’s bedding. When those young fleas mature they may reinfest the pet.

Read the entire article on KQED Science:
https://www.kqed.org/science/1....957872/a-fleas-fanta

For more information:Why do Large Animals Never Actuate Their Jumps with Latch-Mediated Springs? Because They can Jump Higher Without Them. (Gregory P Sutton, Elizabeth Mendoza, Emanuel Azizi, Sarah J Longo, Jeffrey P Olberding, Mark Ilton, Sheila N Patek)https://academic.oup.com/icb/a....rticle/59/6/1609/554

Baaba Maal: Nomad Soul [Full Album]
Baaba Maal: Nomad Soul [Full Album] Ambakisye-Okang Dukuzumurenyi 28 Views • 5 years ago

Baaba Maal - Nomad Soul PALM Pictures 1998
00:00 Souka Nayo (I Will Follow You)
06:25 Africans Unite (Yolela) [duet with Luciano]
10:07 Mbolo
15:53 Cherie
23:02 Fanta
28:01 Guelel
34:16 Douwayra
38:28 Iawa
42:41 Yiriyaro (Percussion Storm)
48:33 Koni
55:00 Lam Lam

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Baaba Maal has partnered with charity: water to reissue his critically acclaimed album, The Traveller. All proceeds go towards bringing clean, safe drinking water to people in developing countries. Download here:
https://lnk.to/BaabaMaal-CharityWaterID

The reissue exclusively features a new 50-minute documentary of his annual Blues Du Fleuve Festival in Senegal as well as a 12-minute short film featuring Baaba performing acoustically and talking about his involvement with the charity.

View the full 50 minute documentary, and receive a download of Baaba’s album “The Traveller” with a contribution to charity: water via this link: https://lnk.to/BaabaMaal-CharityWaterID

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The Palm Channel will present some of the highlights from our catalogue, an eclectic mix of original short films, interviews from our archives exploring the roots and branches of Jamaican music, and much more.

Created by Island Records founder Chris Blackwell (Bob Marley, U2, Grace Jones etc.). Palm Pictures has always pushed musical boundaries and encouraged unlikely collaborations. Since the late 90's it has been a leader in the convergence of music and film, producing and distributing music documentaries, arthouse & foreign cinema, and music videos.

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