What were you doing when you were nine years old? Making crafts from a Klutz book? Kicking around a soccer ball? Designing a business plan to deal with plastic pollution and relieve childhood poverty? Zymal Umar shoved us the latter. The Pakistan's youngest businesswoman has started a project entitled Zee Bugs, which aims to reduce plastic pollution by providing an environmentally-friendly alternative to plastic grocery bags.

When Zymal was on a shopping trip with her parents three years ago, she was shocked by the number of plastic bags on the streets. Depressed by the plastic pollution, she was reminded of the severe consequences our habits have on the environment. Then, she noticed a shopkeeper handing out newspaper bags. And at that moment, Zymal knew she had to act. Since then she has created beautiful, unique reusable newspaper bags for hundreds of customers.

It's amazing to see this youngster using her brains and business skills for good. And she should certainly feel proud of the work she is doing. After all, plastic grocery bags are killing thousands of marine animals every year through their contribution to plastic waste According to The Earth Institute, over one trillion plastic bags are used worldwide annually — that's about two million bags used per minute around the world.

And those bags certainly don't disappear into thin air. Instead, they end up in our oceans, putting approximately 700 marine species in danger of extinction due to the threat from pollution. And plastic bags are just one of the many forms of plastic trash that ends up in the oceans — in fact, an astonishing 8.8 million tons of this material make their way from land to the oceans every single year.

But with Zee Bags, we're all empowered to make more thoughtful choices about our trash production. And Zymal's amazingness doesn't stop there — the profits from her sales go towards helping poor children.

Coca-Cola announced on Wednesday that it will begin transitioning (转变) from green to clear plastic on August 1 to increase the material’s likelihood of being remade into new beverage (饮料) bottles. The beverage giant is committed to making 100% of its packaging recyclable by 2025 and using at least 50% recycled material in its packaging by 2030.

Sprite, an important brand of Coca-Cola, currently uses plastic bottles containing a green additive called Polyethylene Telephthalate (PET). These bottles are commonly changed into single-use items like clothing and carpeting that can’t be recycled into new PET bottles.

“Taking colors out of bottles improves the quality of the recycled material,” said Julian Ochoa, CEO of a plastics group, which is working with Coca-Cola to improve bottle-to-bottle recycling. “When recycled, clear PET Sprite bottles can be remade into bottles, helping drive a circular economy for plastic.”

Sprite, the popular lemon-flavored soft drink, which first hit shelves in 1961, is also getting a new logo and packaging design. Sprite’s packaging will keep the brand’s recognizable green color and include noticeable “Recycle Me” message. Other drinks that use green bottles will also transition to clear packaging in the coming months.

Both Coca-Cola and PepsiCo have been criticized for contributing to the world’s plastic pollution. In 2021, both companies ranked as the world’s top plastic polluters for the 4th consecutive (连续的) year by the environmental organization Break Free From Plastic. Global beach cleanups were carried out by more than 11,000 volunteers in 45 countries to identify the most common plastic polluters. Break Free From Plastic found that 20,000 Coca-Cola branded products were picked up, representing more pollution than the next two top polluters combined.

Coca-Cola announced its “World Without Waste” sustainable packaging program in 2018, in which it promised to make all of its packaging recyclable—excluding the caps and labels—as well as have at least 25% of its beverages sold in refillable packaging by 2030.

Puppies can be taught. So can human children, though not for the first couple of years. Now, in the hope of fighting climate change, Dr Jan Langbein, of the Fredrich-Loweffler-Institut in Germany, and his colleagues hope they can train cows to use the toilet, too.

Cow pee（尿）contains a nitrogen-rich substance that, when broken down by enzymes（酶）, is transformed into ammonia（氨）. Bacteria in the soil, in turn, transform that ammonia into nitrous oxide, a greenhouse gas. Collecting and treating cow pee before the ammonia can be produced might, therefore, seem like a good idea. But it has proved difficult in the past without limiting the cows to small areas, which is bad for their welfare.

As Dr Langbein describes in Current Biology, this confusing problem could be solved if cows could be persuaded to voluntarily relieve themselves in a toilet. He has developed a three-stage process to help cows master toilet training. The first job was to establish the toilet. Calves（小牛）were limited to a toilet and rewarded with treats after peeing in it. Next, they were given the freedom to wander around a path outside the toilet. Peeing in the toilet were rewarded; those in the path were gently punished with a spray of water. Finally, the path was extended, to allow the animals to practice self-control over a greater distance.

Of the 16 calves involved in the training process, 11 were considered successfully toilet-trained by the end of it. Their overall performance, say the researchers, was almost comparable to that of human children. The animals managed to pee in the toilet around 77% of the time.

The next step, says Dr Langbein, is to see if cattle on a working farm can be similarly trained. Whether farmers will be keen is another question. Building toilets and training animals costs time and money, after all. But when it comes to climate change, every little helps.