Species that are moved away from their natural predators back home can displace native species in their new habitats, and scientists say the problem already costs Europe 12 billion euros ($16 billion) a year.

The study, which is likely to hold true for other continents too, means that the seeds of future, perhaps bigger, problems have literally already been sown.

The study compared the effects of “alien species””such as American ragweed, Canada geese or Japanese deer in 28 European countries.

The study’s findings indicated that it can take decades to figure out which alien species will be disruptive, and looking at those that arrived in 1900 was a better indicator of current problems than looking at those from 2000.

“This lag in the cause-and-effect relationship would mean that … the seeds of future invasion problems have already been sown,” said the study, published in the U.S. Proceedings of the National Academy of Sciences.

Birds and insects were quickest to get established in new habitats, helped by their mobility. Others took far longer to reach the critical numbers to become invasive.

Introductions to Europe from the 19th century included ragweed, whose pollen is blamed for some hay fever, and the black locust tree, also from North America, which can damage European grassland with its ability to store nitrogen.

Increasing trade and travel during the 20th and 21st centuries means that the problems are likely to worsen unless checks on everything from the ballast tanks of ships to coffee or grain imports are tightened.

“We should do more about this problem now,” said Stefan Dullinger, of the University of Vienna, Austria, who was among authors of the study from institutes in New Zealand, the Czech Republic, Germany, Switzerland, Spain, Italy and France.

“Otherwise, things can become even much worse than they are in a few decades,” he said. The findings for Europe were likely to be mirrored elsewhere in the world.

The study also recommended that Europe should target controls at animal and plant species that were so far causing no damage but were known to be invasive in other habitats.

Climate change could also add to the spread. “Warmer temperatures could trigger the spread of invasive species that are limited by climate now,” Dullinger said.

This fall, it will send cups used at its Chicago stores to Green Bay, where a Georgia Pacific paper mill will turn them into Starbucks napkins. The effort is a major push by Starbucks to create a commercial market for its used cups, which include 1 billion plastic cups for cold drinks.

Over the past few weeks, it has put recycle and compost bins into 90 Seattle stores to comply with a new city ordinance.

By Thursday, every grocery store, restaurant and coffee shop in Seattle will be required to recycle and compost, and to provide recyclable or compostable to-go packaging for everything from ground beef to lattes. The new ordinance will prevent 6,000 tons of food and service ware from piling onto garbage heaps. Starbucks’ cups also are recycled or composted in San Francisco and Ontario, because of laws there.

In areas without such mandates, commercial demand determines which products are recycled.

“The biggest roadblock to recycling is the lack of demand” for old paper, said Jim Hanna, Starbucks’ director of environmental impact and global responsibility. “We need to create demand for recyclers for our products.”

The effort is similar to something Coca-Cola has done in South Carolina, where it invested $60 million in a plant that makes soda pop bottles from old soda bottles and other recycled plastic.

Environmental activists at the As You Sow Foundation in San Francisco, which led a shareholder initiative earlier this year to push Starbucks to recycle more, is impressed with its latest efforts. The initiative received 11 percent of the vote, a healthy chunk considering that mutual funds and other institutions own three-quarters of Starbucks’ stock.

“Their goal is not just to have recycling bins in stores by 2015, but to find markets so all those paper cups actually get recycled,” said Conrad MacKerron, director of corporate social responsibility at the nonprofit. Finding a market for paper cups is harder than for items like aluminum cans, he said.

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The son of Lithuanian immigrants, Antanas Mockus is a Colombian mathematician, philosopher and politician. After serving as rector at Bogota’s Universidad Nacional, Mockus went on to become mayor of Bogota twice. He is renowned for his eccentric, outside the box thinking, which has led him to perform some unusual but thought-provoking stunts.

The Eco Design Award in Sapporo, northern Japan, is a small but growing event inviting designers to think about materials and shapes, and come up with great design. Last year, the lovely handmade recycled wine bottle lamp shown here won the Grand Prix. Designed by Kusumoto Sukehiro at ni-un pet, a glass artist based in a very small wooden house, who has quite a following at least in Japan (and Finland). SECCO sells it online for 39,000 yen.