Monday, June 22, 2020

What is the "Black Lives Matter" movement of USA

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Article Contributor(s)

Kanika Bajaj

Article Title

What is the "Black Lives Matter" movement of USA

Publisher

Global Views 360

Publication Date

June 22, 2020

URL

Black Lives Matter Protest

Black Lives Matter Protest | Source:Lenny DeFranza via Wikimedia

Over 55 years have passed since the signing of civil right laws which were supposed to be the panacea for all the ills of raciest abuses faced by the Black-Americans. A lot has increased since for the Black Americans but much more is still to do. They still live in the fear of law enforcement officials who monitor their movement on the street and also in their homes. The blacks are killed  at the lightest alleged provocation by city police without any fear of serious repercussion. The Federals law enforcement agencies also have a history of racist behavior and brutality towards black Americans.

“Black Lives Matter” movement was started in 2013, after a white person named George Zimmerman was acquitted in the shooting death of African-American teen Trayvon Martin in February 2012. The movement got its name as the hashtag #BlackLivesMatter was widely used on social media to protest the acquittal of George Zimmerman.  This movement aims to highlight the injustices, brutality, oppression, gratuitous killings, systemic racism, ruthlessness, bad form, and unaccountably that American culture, particularly law implementation, harbours toward black individuals. Dissenters have pointed out the uncalled intensity of the police, military weaponry, and impulsive usage of the same. The problem of policing in America is more than just individual bad police officers, the culture protects wrongdoers and rewards blind loyalty and is impervious to change. American citizens have recognized these loopholes and will not tolerate these wrongdoings anymore

On 25th May 2020, a 46-year-old black man named George Floyd, died at the hand of a police officer after allegedly using a counterfeit $20 bill at the convenience store. The killing was extensively covered by the cross section of media across the USA and American public saw the horror of the painful death of an unarmed black person by the police. A national-wide protest erupted as millions of people, including whites came out in the streets,  demanding justice for George Floyd. Slogans such as “I can’t breathe”, “All lives will not matter unless black lives don’t”, “Stop police brutality” were raised on the streets across the cities of America. The “Black Lives Movement” which was hitherto mostly confined to a section of blacks youths, quickly expanded to include a wide section of American citizens. 

In his death George Floyd became the symbol of police brutality against the black community in the USA and brought the “Black Lives Matter” from the fringe to the center of American social and political discourse.

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February 4, 2021 4:59 PM

Xenobots: The first ever ‘living’ robots

Creating robots using artificial intelligence has become quite normal in this century. But a robot built with an amalgamation of artificial intelligence and biology is quite enthralling. Researchers from University of Vermont and Tufts University collaborated to conceive a living robot called ‘Xenobot’.

This astounding, millimeter-wide chunk of technology is considered to be ‘living’ as it is created by stem cells from the embryo of Xenopus laevis, an African frog species. These stem cells were selected in such a way that they grew out to be heart and skin cells.

Prior to this, computer scientists at the University of Vermont ran an evolutionary algorithm, which imitates natural selection, on their supercomputer, which yielded the most suitable structures of the robot. After selecting the best designs, biologists at the Tufts University moulded the skin and heart cells into the forms which closely resembled the outputs of the algorithm, through microsurgery.

The resulting biological bodies looked like tiny aliens. "They're neither a traditional robot nor a known species of animal. It's a new class of artifact: a living, programmable organism" said Joshua Bongard, a computer scientist and robotics expert at the University of Vermont, who was involved in the research. Detailed results are published in the Proceedings of the National Academy of Sciences (PNAS) research paper on January 13, 2020.

Newly created xenobots were found to swim in any liquid medium for at least 10 days (or more if put in a nutrient-rich environment) without being fed with any nourishment, since the cells have a reserve of embryonic energy.

Another incredible facet of this technology is that it can revamp any of its parts efficiently upon damage. While technological pieces made out of plastic and metal might cause a lot of pollution after they are disposed of, xenobots are completely biodegradable, causing no harm to the environment. "These xenobots are fully biodegradable, when they're done with their job after seven days, they're just dead skin cells" said Bongard.

One might wonder how these miniscule cell blotches are helpful to us. Well, Xenobots may be very small in size but they can achieve feats which almost no huge, metal-made robot can.

These living robots will be useful in certain fields like medicine wherein they could be utilized to clear plague from our arteries. They can also be modelled with pouches which enables them to carry certain substances. This property can be used for delivering drugs in specific parts of our bodies. Xenobots can also be a boon in the field of cancer biology as they can help reprogramming tumors into normal cells.

Additionally, these tiny biological bodies can be oceans’ best friends. With contaminants like radioactive chemicals, plastics and microplastics creating havoc in the marine world, an immediate need to clean up our water bodies arises. Many xenobots were observed to be moving in circles (an attribute of the beating heart cells), which resembled a ‘clean-up’ motion. Hence, these tiny robots can be a perfect tool to eradicate microplastics from the oceans as well as eliminating nuclear wastes.

Although this technology may be promising, certain ethical questions arise with every technological development, especially those involving biological manipulations. If programmed in a certain way, xenobots can also take over natural biological functions (maybe nerve cells to hamper brain function) and this can be used for nasty purposes.

Michael Levin who directs the Center for Regenerative and Developmental Biology at Tufts said, “That fear is not unreasonable. When we start to mess around with complex systems that we don't understand, we're going to get unintended consequences”. Levin and Bongard are extensively working towards understanding how complex systems work. "There's all of this innate creativity in life. We want to understand that more deeply—and how we can direct and push it toward new forms" said UVM's Josh Bongard.

Like any new disruptive technological innovation, the Xenobots also have the potential to prove boon or bane for the humankind. Let's hope it turns out more boon than bane.

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