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Indian-American among math and science teachers honoured by Obama

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Darshan Jain, an Indian-American teacher is one of the 108 teachers named by President Barack Obama as recipients of the prestigious Presidential Award for Excellence in Mathematics and Science Teaching.

Jain, who has taught mathematics at Adlai E. Stevenson High School in Lincolnshire, Illinois for eight years where he currently serves as the director of mathematics, and other winners will receive a $10,000 award each from the National Science Foundation.

The educators will receive their awards at a Washington, DC, event later this summer.

Stevenson High School math teacher Darshan Jain is all smiles while holding his 3-year

“These teachers are shaping America’s success through their passion for math and science,” Obama said of the winners.

“Their leadership and commitment empower our children to think critically and creatively about science, technology, engineering, and math.

“The work these teachers are doing in our classrooms today will help ensure that America stays on the cutting edge tomorrow,” he said.

The Presidential Award for Excellence in Mathematics and Science Teaching is awarded annually to outstanding K-12 (kindergarten through 12th grades) science and mathematics teachers from across the country.

“The Presidential Award validates my core belief that all students can learn mathematics in authentic, rigorous, and impactful ways,” Jain said.

“It is grounded in my experience that collaborative teachers can help all students achieve excellence.”

“This award provides opportunities to have discussions around improving math education at local and national levels,” he said.

“Students’ experiences in mathematics must fundamentally change in order to support our national vision for equity, access, and competitiveness.”

Jain’s industry experience includes time spent as a project engineer and a machine designer.

Darshan Jain, director of mathematics at Stevenson High School in Lincolnshire, has received a Presidential Award for Excellence in Mathematics and Science Teaching. Here he is when he taught in the classroom.
Darshan Jain, director of mathematics at Stevenson High School in Lincolnshire – here he is when he taught in the classroom. – Daily Herald file photo

Jain’s love for teaching was inspired by his work at the Hispanic Math and Science Initiative and his students’ success in learning.

As adjunct professor for mathematics education, Jain supported novice teachers. He now leads exceptional colleagues as curriculum director for his district.

Jain has also contributed to the education community by speaking on research-based pedagogy at local, state and national conferences.

Jain has a BA in mechanical engineering and a MS in secondary mathematics education from the University of Illinois at Chicago. He is pursing further graduate work. (IANS)

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Invasive Species May Not Be All Bad: Scientists

An active debate among biologists about the role of invasive species in a changing world is going on

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Invasive Species
The invasive European green crab is tearing down ecosystems in Newfoundland and building them up on Cape Cod. VOA

Off the shores of Newfoundland, Canada, an ecosystem is unraveling at the hands (or pincers) of an invasive crab.

Some 1,500 kilometers (930 miles) to the south, the same invasive crab — the European green crab — is helping New England marshes rebuild.

Both cases are featured in a new study that shows how the impacts of these alien invaders are not always straightforward.

Around the world, invasive species are a major threat to many coastal ecosystems and the benefits they provide, from food to clean water. Attitudes among scientists are evolving, however, as more research demonstrates that they occasionally carry a hidden upside.

“It’s complicated,” said Christina Simkanin, a biologist at the Smithsonian Environmental Research Center, “which isn’t a super-satisfying answer if you want a direct, should we keep it or should we not? But it’s the reality.”

Simkanin co-authored a new study showing that on the whole, coastal ecosystems store more carbon when they are overrun by invasive species.

Good news, crab news

Take the contradictory case of the European green crab. These invaders were first spotted in Newfoundland in 2007. Since then, they have devastated eelgrass habitats, digging up native vegetation as they burrow for shelter or dig for prey. Eelgrass is down 50 percent in places the crabs have moved into. Some sites have suffered total collapse.

That’s been devastating for fish that spend their juvenile days among the seagrass. Where the invasive crabs have moved in, the total weight of fish is down tenfold.

The loss of eelgrass also means these underwater meadows soak up less planet-warming carbon dioxide from the atmosphere.

In Cape Cod, Massachusetts, the same crab is having the opposite impact.

Off the coast of New England, fishermen have caught too many striped bass and blue crabs. These species used to keep native crab populations in check. Without predators to hold them back, native crabs are devouring the marshes.

But the invasive European green crab pushes native crabs out of their burrows. Under pressure from the invader, native crabs are eating less marsh grass. Marshes are recovering, and their carbon storage capacity is growing with them.

Invasive species
In this May 8, 2016 photo, eelgrass grows in sediment at Lowell’s Cove in Harpswell, Maine. VOA

Carbon repositories

Simkanin and colleagues compiled these studies and more than 100 others to see whether the net impact on carbon storage has been positive or negative.

They found that the ones overtaken by invasive species held about 40 percent more carbon than intact habitats.

They were taken by surprise, she said, because “non-native species are thought of as being negative so often. And they do have detrimental impacts. But in this case, they seem to be storing carbon quicker.”

At the Smithsonian Environmental Research Center where she works, the invasive reed Phragmites has been steadily overtaking a marsh scientists are studying.

Phragmites grows much taller, denser and with deeper roots than the native marsh grass it overruns.

But those same traits that make it a powerful invader also mean it stores more carbon than native species.

“Phragmites has been referred to as a Jekyll and Hyde species,” she said.

Not all invaded ecosystems stored more carbon. Invaded seagrass habitats generally lost carbon, and mangroves were basically unchanged. But on balance, gains from marsh invaders outweighed the others.

Invasive species
Phragmites plants growing on Staten Island draft in a breeze in the Oakwood Beach neighborhood of Staten Island. VOA

Not a lot of generalities

To be clear, Simkanin said the study is not suggesting it’s always better to let the invaders take over; but, it reflects an active debate among biologists about the role of invasive species in a changing world.

“One of the difficult things in the field of invasion biology is, there aren’t a lot of generalities,” said Brown University conservation biologist Dov Sax, who was not involved with the research. “There’s a lot of nuance.”

The prevailing view among biologists is that non-native species should be presumed to be destructive unless proven otherwise.

When 19 biologists wrote an article in 2011 challenging that view, titled, “Don’t judge species on their origins,” it drew a forceful rebuke from 141 other experts.

Sax said the argument is likely to become more complicated in the future.

Also Read: Climate Change Not A Hoax: Trump

“In a changing world, with a rapidly changing climate, we do expect there to be lots of cases where natives will no longer be as successful in a region. And some of the non-natives might actually step in and play some of those ecosystem services roles that we might want,” he said.

“In that context, what do we do? I definitely don’t have all the answers.” (VOA)