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The study is the first to coordinate such a broad global survey of the world's rivers, examining levels of 14 common antibiotics from 711 sites across 72 countries. John Wilkinson, one of the researchers coordinating this large project, suggests that alongside many regions never before monitored, this is the largest antibiotic survey ever conducted.

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Antibiotics found in world's rivers at levels up to 300 times about safe levels

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In a huge global study hundreds of rivers around the world have been tested for levels of common antibiotics. It found 65 percent of all samples contained some concentration of antibiotics, with the worst cases showing levels more than 300 times higher than the generally accepted safe threshold.

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Find out more about Birke Baehr. Interested in finding out more about CAFOs and how animals are being treated before slaughter? Visit this CDC page with more interesting links about Concentrated Animal Feeding Operations. See how others are taking healthy eating into their own hands. Ron Finley provides organic food for his South Los Angeles neighborhood by planting it in his own neighborhood. Find out the location of your neighborhood farmer's market.

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What's wrong with our food system - Birke Baehr

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11-year-old Birke Baehr presents his take on a major source of our food -- far-away and less-than-picturesque industrial farms. Keeping farms out of sight promotes a rosy, unreal picture of big-box agriculture, he argues, as he outlines the case to green and localize food production. (Filmed atTEDxNextGenerationAshevillen.)

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Are bananas going to disappear?

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Curious about Panama Disease? Take a look here and learn more about how serious this disease is and exactly what is threatened by it.

Although this video was made in 2013, the Cavendish Banana is believed to be even more in peril. Why? Read this article from the Smithsonian Magazine and find out! There May Be No Saving The World's Top Banan a may also give you some idea about how serious this issue is. Finally, read, " Bye, Bye, Bananas." from the Washington Post.

How could such an "appealing" fruit have such a sordid past? Well, start here with: Unpeeling the Controversial History of Bananas. For more on the history behind the banana, see here!

Want to read a whole book about bananas? Listen to this interview on Fresh Air at NPR.

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Curious about Panama Disease? Take a look here and learn more about how serious this disease is and exactly what is threatened by it. Although this video was made in 2013, the Cavendish Banana is believed to be even more in peril. Why? Read this article from the Smithsonian Magazine and find out!

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Plants and bugs have been together for a long time; they know each other well by now! Relationships between plants and bugs are complex, from herbivory, to obligated host, to obligate pollinator. Therefore, it is not surprising to find out that chrysanthemums ( Chrysanthemum cinerariaefolium) contain a powerful insect pesticide, pyrethrin, which was slightly modified to create a whole chemical pesticide family called pyrethroids. Unlike their antecesor, pyrethrins are tweaked to resist sunlight. Only a few atom differences enabled their effective use in open air. Today, pyrethroid soaked mosquito nets are critical to protect populations from malaria and other insect borne diseases.

Recent outbreaks of mosquito-borne diseases like Zika and Chikungunya have increased the enthusiasm for eliminating mosquitoes from Earth. Shouldn't we be better off without them? Scientists are developing technology solutions to combat pests using approaches apart from chemical poisoning. For example, the Food and Agriculture Organization (FAO) of the United Nations coordinates research projects using the Sterile Insect Technique (SIT), proposing an ingenious chemical-free approach to control fertility of some pests. Remembering 2014 TedSalon London talk, Haydn Parry biotechnology entrepreneurship is moving science fiction a step closer to science fact. You can also check out Emma Bryce's TED-Ed on the Case of the Vanishing honeybees here.

What would happen if we succeed? It is hard to imagine another agenda for mosquitoes that excludes blood-sucking. However, some mosquito species may have significance that is still unknown unknown in ecosystems functioning. Ironically, wiping mosquitoes from the face of earth could have even more annoying consequences. The ability to modify natural populations and ecosystems at will could be closer than imagined. For instance, the CRISPR/Cas9 gene editing tool, one of the most revolutionary technological developments in the decade, has proven to be effective to change the odds of Mendelian inheritance in our favor. This technological breakthrough could aid scientists to engineer ecosystems one species at a time, but who is to give the call?

You can find the music track used in this video here.

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Do we really need pesticides? - Fernan Pérez-Gálvez

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Annually, we shower over 5 billion pounds of pesticides across the Earth to control insects, unwanted weeds, funguses, rodents, and bacteria that may threaten our food supply. But is it worth it, knowing what we do about the associated environmental and public health risks? Fernan Pérez-Gálvez weighs the pros and cons of pesticides.

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Let's Begin...

Food doesn't last. In days, sometimes hours, bread goes moldy, apple slices turn brown, and bacteria multiply in mayonnaise. But you can find all of these foods out on the shelf at the grocery store - hopefully unspoiled -- thanks to preservatives. But what exactly are preservatives? How do they help keep food edible? And are they safe? Eleanor Nelsen investigates.

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Are food preservatives bad for you? - Eleanor Nelsen

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Food doesn't last. In days, sometimes hours, bread goes moldy, apple slices turn brown, and bacteria multiply in mayonnaise. But you can find all of these foods out on the shelf at the grocery store - hopefully unspoiled -- thanks to preservatives. But what exactly are preservatives?