Conférence télévisée de CHEIKH ANTA DIOP à l'émission "FOR THE PEOPLE"

Uhem Mesut, notre renaissance: http://uhem-mesut.com/

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

Dr. Susan Chomba, Regreening Africa Programme Manager from the World Agroforestry Centre (CIFOR-ICRAF), discusses agroforestry as a Nature-based Solution and on engaging communities in agroforestry programs.
Dr. Chomba is a social scientist with over 15 years of experience in governance, policies and institutions in forestry, agriculture and rural development in Africa. She works on climate change policies, land tenure, equity, vulnerability and gender.

AFP News Agency - Armed men attacked Paul James' father at 5 am. The herder was stabbed, beaten and shot in the head. His crime? Settling on coveted land. The first part of our special report on Fulani nomads

We climbed Mt. Kilimanjaro in the rain. Watch video for more details.
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RAIN is all about rainwater harvesting, check http://www.rainfoundation.org/

Sufficient and safe water should be available to everyone. Unfortunately, many people don’t have access to safe water. How to change that? Harvest rainwater!

Since its foundation in 2003, RAIN has been working with its partners to develop, spread and implement rainwater harvesting systems.

The idea is simple. There is hardly a place in the world where it never rains. Rainwater belongs to everyone. And the methods to collect, store, use and reuse rainwater (to ‘harvest’ rainwater) are easy to apply. So why not spread those methods around the world?

Rainwater harvesting: for whom?
We aim to motivate and help as many people as possible to apply these methods in a sustainable and effective way, whether the water is for domestic, productive or environmental purposes.

Our focus is on making the concept and practice of rainwater harvesting (RWH) familiar to people in areas that lack sufficient and safe water sources.

To mark 25 yrs of democracy, SABCNews rebroadcasts its first-ever pre-election debate, between Nelson Mandela & FW De Klerk on 14 April 1994. In studio are Profs @somadodafikeni and Susan Boysen with Freek Robinson who facilitated the debate. #SABCNewsChannel


For more news, visit: sabcnews.com

During his 1990 visit to Atlanta, Nelson Mandela spoke at Morehouse College's Martin Luther King Jr. International Chapel.

⁣The Diamond Empire
1 Feb 1994


⁣SEASON 1994: EPISODE 9


Second only to Christmas, Valentine’s Day is the holiday when diamonds are most often given as the ultimate token of love. Central to the diamond’s role as a romantic symbol is the belief that diamonds are one of the rarest, most precious gifts for a loved one. But it’s only a myth–diamonds are found in plentiful supply. FRONTLINE examines how the great myth about the scarcity of diamonds and their inflated value was created and maintained over the decades by the diamond cartel. This report chronicles how one family, the Oppenheimers of South Africa, gained control of the supply, marketing, and pricing of the world’s diamonds.

Last month South African President Jacob Zuma was forced from office by his own party, the African National Congress, when almost a decade's worth of corruption, bribery and racketeering allegations finally became too great to ignore. It is possible that within weeks he could appear in court to face charges relating to at least one of the many financial intrigues from his years in power.

As anyone following this story will know, his most infamous former associates, the billionaire Gupta brothers, are now fugitives from justice amid claims that during the Zuma years they systemically looted state assets on a truly astonishing scale - principally by using their friendship with the then-president to influence political appointments and win lucrative government contracts. They are believed to have fled the country and taken refuge in Dubai, where they own property.

But the former president and his state-capturing confrères aren't the only ones under scrutiny in South Africa these days. We've been to examine the role allegedly played by major international companies in scandals so toxic and far reaching, they look set to haunt the country for years to come.

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