4 . New research from the University of Portsmouth has shown a marked increase in shipping in the North East Atlantic. Scientists now warn that more monitoring is required to help protect sea life.

Researchers at the University of Ponsmouth have discovered that rates (率) of shipping in the North East Atlantic area rose by 34 per cent in a five-year period. The research is the first detailed survey of shipping activity in the North East Atlantic. Researchers used data from over 530 million vessel (船) positions recorded by Automatic Identification System(AIS). They looked at the change in shipping between 2013 and 2017 across ten different vessel types. In total the study area covered 1.1 million km², including waters off Belgium, Denmark, France, Germany,Iceland, Ireland, The Netherlands, Norway, Portugal. Spain, and the UK.

Lead author, James Robbins said: “This change is likely to put more pressure on the marine (海洋的) environment, and may influence the protection of at-risk species. Renewed monitoring effort is needed to make sure that protective measures are enough to save species under threat in a changing environment.”

Some of the greatest shipping increases were found in areas close to the Spanish coast. The Espacio Marino de la Costa da Morte saw a rise of 413 percent in vessel activity. It is an area used to protect seabirds.

Dr. Sarah Marley, Visiting Researcher at the University of Portsmouth, said: “Shipping is the most widespread human activity in our oceans, carrying a set of threats-from unnoticeable effects like underwater noise pollution to serious results when ships hit whales.”

Professor Alex Ford. from the University’s Institute of Marine Sciences, said: “Given the well-documented effects that shipping can have on the marine environment, it is necessary that this situation continues to be monitored-particularly in areas used to protect vulnerable (脆弱的) species which may already be under pressure.”

5 . My first dependant was a duck called Mr. Kite. As a cream-faced four-year-old, it was my job at the nursery to turn the eggs in the incubator (恒温箱) every day: one side “O”, the other side “X”.

We lived in a small, inner-city house with a long, thin garden in east Oxford at the time. As a gentle-hearted vet's (兽医的) daughter, my mum couldn't resist adopting these ducks. I named them Buttercup, Mr. Kite and Drakey. We made them a pond. The bottom was a mosaic (马赛克) made from all the bits of plate and cup that had been broken during family rows. Within 30 seconds,the pond was so full of duck droppings that we never saw the mosaic again.

One of the most magical moments during my caring for ducks was the night it snowed. Mum, over whelmed by pity and grandmotherly concern, insisted that Mr. Kite and her friends — yes, Mr. Kite was female — be spared another freezing night in the wooden house my dad had built for them at the end of the garden; we caught them, flapping and shouting, and brought them in to sleep in the kitchen.Have you ever seen three ducks go wild in a tiny kitchen? It was one of the best moments of my childhood. It smelled like the underside of hell's socks by the time they had left.

I used to spend my summers lazing in a swimming pool with Mr. Kite and the others. Eventually, though, our neighbour complained that they were being woken at 4:45 a.m.. So, the feathered three went to live with an old couple in the country. Fair enough — you don't move to the city to have the dawn torn apart by quacking   — although it must have made a change from student parties and the sound of 19-year-olds being sick by the bins.

I wonder now if this early experience of duck adoption is the reason that, at least three times a week, what ever the weather, you will find me swimming in the Thames or a nearby lake with the ducks. Although they never say hello.

7 . A new study by scientists at Utrecht University concludes that about half of global wastewater is treated, rather than the previous estimate of 20%. Despite this promising finding, the authors warn that treatment rates in developing countries are still very low.

Humans and factories produce vast quantities of wastewater per day. If not properly collected and treated, wastewater may severely threaten human health and pollute the environment.

The authors use national statistics to estimate volumes of wastewater production, collection, treatment and reuse. “Globally, about 359 billion cubic metres of wastewater is produced each year, equivalent to 144 million Olympic-sized swimming pools,” says Edward Jones, PhD researcher at Utrecht University. “About 48 percent of that water is currently released untreated. This is much lower than the frequently announced figure of 80%.”

While the results show a more optimistic outlook, the authors stress that many challenges still exist. “We see that particularly in the developing world, where most of the future population growth will likely occur, treatment rates are falling behind,” Jones explains. “In these countries, wastewater production is likely to rise at a faster pace than the current development of collection and treatment basic facilities. This poses serious threats to both human health and the environment.”

The main problem, especially in the developing world, is the lack of financial resources to build basic facilities to collect and treat wastewater. This is particularly the case for advanced treatment technologies, which can be extremely expensive. However, the authors highlight potential opportunities for creative reuse of wastewater streams that could help to finance improved wastewater treatment practices.

“The most obvious reuse of treated wastewater is to increase freshwater water supplies,” Jones states. Treated wastewater reuse is already an important source of irrigation water in many dry countries. However, only 11% of the wastewater produced globally is currently being reused, which shows large opportunities for expansion.

“But freshwater increasing is not the only opportunity,” says Jones. “Wastewater also has large potential as a source of nutrients and energy. Recognition of wastewater as a resource, opposed to as ‘waste’, will be the key to driving improved treatment going forward.”

However, the authors stress the importance of proper monitoring of wastewater treatment factories, accompanied by strong legislation (法律) and regulations, to ensure that the reuse of wastewater is safe. The authors also acknowledge public acceptance as another key barrier towards increasing wastewater reuse.