Tag Archives: US

Trump and science: How US new travel bans affect scientists and their research

Science is one way for human beings to interpret and develop the world, and politics is another way, yet it is time to notice science and politics are no longer running in parallel. In the US, politics is affecting science and harming science progresses.

Since the beginning of this year, Donald Trump issued and revised policies limiting immigration from Muslim-majority countries. Following Nature’s reports, travel bans have negatively impacted scientists and their researches in and outside of the US. Active and future scientists faced extreme travel difficulties, and a few international science conferences and collaborations were canceled or delayed due to the ban.

No Ban, No Wall Protest at PHL Airport” by Joe Piette. Image from Flickr. CC BY-NC 2.0

In January, Trump imposed the first short-term block on seven Muslim-majority countries, in which perspective science researchers accepted into American institutions before January could not obtain a visa. Some of them lost the science education and research opportunities they had earned and been guaranteed. Samira Samimi, a glaciologist from Iran, had a plan of going to Greenland from New York to study snowmelt. After the ban became effective, she could no longer meet with her US team and fly to Greenland. Samimi faced potential consequences of ceasing her research project and delaying her PhD degree.

“None of this is right. There is no way this helps us or our science.” says Mike MacFerrin, a glaciologist colleague of Samimi’s.

A similar tragedy happened to Hani Goodarzi, a cancer biologist at the University of California, San Francisco. He was forced to cancel a talk at the University of Calgary in Canada, because as an Iranian migrant, he was under the fear of not being able to return to the US after leaving the country.

It is not fair for scientists to take the consequence of politics, and it is worse that life-save science researches also suffer from politics.

International projects on combatting disease were heavily interrupted. Farrokh Modabber, an infectious-disease scientist in Iran, could not attend a conference held at the US due to immigration policies. Without updated knowledge from the frontline scientists in regions emerging diseases, the development of vaccinations in the US can be slowed down significantly. As far as Nature has reported, several researches including one on HIV were all greatly hindered by the ban.

“The only way to prevent emerging diseases from coming to the US is to stop them in their tracks in the countries where they arise.” Says Peter Hotez, a disease expert at Baylor College of Medicine in Houston, Texas.

It is time to be alert that science deserves to develop without being disturbed, and politics can heavily impact science. A feasible approach to save science from bans is to exclude restrictions on highly professional individuals from policies. In fact, scientists including Nobel prize winners have already started fighting back since January, yet a lot more attention and voices are still needed for the sake of science.

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Youtube: March for Science

-Zhou Wang

Recent Study in Nature Geoscience Highlights Need for International Cooperation on Climate Change

September 24, 2017

Revised: October 14, 2017

Author: Kiara Grant

Pollution in China might be contributing to ozone levels over the western United States, according to an article recently published in Nature Geoscience. The article detailed the findings of a research group at the Royal Meteorological Institute of Belgium, which analyzed data from a NASA satellite called Aura. Aura measured concentrations of ozone, and its precursors in the atmosphere, specifically in two layers of the atmosphere, called the stratosphere and the troposphere.

Tracking the level of ozone in the troposphere is important because, while in the stratosphere ozone protects the planet from UV radiation, just below, in the free troposphere, it acts as a greenhouse gas, contributing to global warming.  Furthermore, in the lower troposphere it can have negative health effects on plant and animal life. Ozone pollution is known to aggravate conditions like asthma and chronic obstructive pulmonary disease (COPD) and can even impair lung development in children.

Diagram of the layers of Earth’s atmosphere       Credit: NASA/Goddard

 

 

The authors of the study broke down the causes of the observed changes in ozone into three categories: emissions, transport, and stratosphere-troposphere exchange. Emissions refers to emissions of nitrogen oxides caused by human activity. Nitrogen oxides are a class of chemicals which, as their name would imply, are made up of nitrogen and oxygen atoms. The term nitrogen oxides is used primarily to refer to NO and NO2 gas. In the troposphere, these gases are precursors to ozone. Transport refers to the long-range transport of ozone, by air currents. Finally, stratosphere-troposphere exchange refers to the natural exchange of ozone from the stratosphere to the troposphere.

The major finding of the Royal Meteorological Institute of Belgium’s study was that significant quantities of ozone travelled from China to the western United States, and that this transport greatly offset the reduction in free-tropospheric ozone which was expected in that area. Between 2005 and 2010, there was an estimated 21% decrease in nitrogen oxide emissions over the Western US. This was thanks to changes in federal, state and local air quality policies. However, approximately 43% of the expected ozone reduction in the Western US between 2005 and 2010 was completely offset by inflow of ozone from China, where tropospheric ozone increased by nearly 7% in that same time period.

This map shows the longwave radiative effect of infrared radiation absorbed by tropospheric ozone as estimated from top-of-atmosphere observations.
Credit: NASA/Goddard

 

The authors of the study concluded that “air quality and regional climate change mitigation policies could eventually have limited impact if not considered in a global context.” Despite the present need for global cooperation to face the threat of climate change, recent events, such as Donald Trump’s announcement that the US will withdraw from the Paris climate accord, have some worried that international alliances are weakening. This study is a clear reminder that when facing global problems, individual nation’s actions have international impact.