Published by the Students of Johns Hopkins since 1896
April 20, 2024

Science & Technology





Flint lead poisoning crisis caused by pipes

Lead poisoning resulting from the man-made health disaster in Flint, Mich. continues to affect a community of about 99,000 people. While Michigan’s state officials have switched back the water supply source from the Flint River to the Detroit water system fed by Lake Huron, the aged pipes of many service lines, corroded by the polluted water from Flint River, are still leaching lead into the water. This has forced Flint residents to rely on donations of bottled water for clean drinking water.


Hopkins to perform first HIV transplants

The Johns Hopkins Hospital recently revealed that it is ready to perform kidney and liver transplants between HIV-positive donors and HIV-positive patients. The hospital, which received approval to conduct this procedure from the United Network for Organ Sharing, will be the first hospital in the U.S. to perform an HIV-positive kidney transplant and the first in the world to perform an HIV-positive liver transplant.


PETER VAN DER SLUIJS/CC-BY-SA-3.0
Zika virus is a serious health concern for pregnant women and women planning on having children.

New study links Zika virus to fetal microcephaly

First discovered in Uganda in 1947 as a mosquito-borne virus that caused a brief, mild illness, the Zika virus’s notoriety has expanded significantly as it continues to live up to its recent designation by the World Health Organization as a global public health emergency.


JASONESBAIN/CC-BY-2.0
Tasers make electric arcs between their electrodes.

Individuals show mental deficits after being Tasered

Let’s say you’ve just been Tasered and arrested by a police officer. As you lay there, dazed and in shock, the officer handcuffs you and reads you your Miranda rights. He asks you if you understand them, and you likely nod or reply a shaky “yes.” You can now be interrogated, and your words can be used against you.


 CLASS SCIENCE TEAM
Ground was broken last spring at CLASS’s site in the Chilean desert.

Gravitational waves discovered

Cosmologists announced on Feb. 11 that they have detected ripples in space-time called gravitational waves. This confirms predictions made a century ago by Albert Einstein and provides an entirely new way to observe the universe.



 AleSpa/cc-by-sa-3.0
At the Conference of the Parties, the U.S. pledged to dramatically reduce greenhouse gas emissions by 2030

U.S. may yield more renewable energy by 2030

On Nov. 30, the Conference of the Parties (COP), consisting of over 190 countries, met in Paris to reduce the effects of climate change. By Dec. 12, this meeting had resulted in an agreement to hold the increase in global average temperature to two degrees Celsius above pre-industrial levels. For the United States, this involved a pledge to reduce greenhouse gas emissions by 28 percent below 2005 levels.


 nasa/jpl-caltech/public-domain
The impact between Earth and Theia, a planet-like object, was likely head-on rather than angled.

Moon was formed by a head-on collision

Geochemists from the University of California, Los Angeles (UCLA) have reported that the moon was formed by a colossal collision between the Earth and a “planetary embryo” called Theia roughly 100 million years after the Earth formed. While scientists were aware of this collision for quite some time, many thought that the Earth and Theia collided at an angle of 45 degrees or more. However, new evidence suggests that the impact was more likely entirely head-on.



Stokpic.com
This new method can remove gold in a usable form from electronics.

New process extracts gold from electronics

Gold, the precious metal that built and destroyed empires, was the focus of millions of investors for years. Two years ago, gold prices peaked at around $2,000 per ounce. This ongoing interest in gold not only motivated ancient kings to start wars of conquest but also inspired a team of scientists to search for innovative methods of extracting gold.


 brett jordan/CC-BY-2.0
The recent, larger models of iPhones are under purchased.

Apple rumored to release up-to-date iPhone 5se

While the power, efficiency and functionality of smart phones have grown rapidly in recent years, so has their size. Apple in particular has been releasing larger and larger mobile devices. This March, it is rumored that Apple will reveal its newest iPhone model. The new phone will purportedly be called the iPhone 5se, with “se” denoting “special edition,” and it will not be larger than four inches.


 sofya freyman/photography staff
Students from throughout the area competed at HopHacks for 36 hours last weekend.

Students compete, learn at largest HopHacks

HopHacks, a bi-annual event held in Hackerman Hall this weekend, offered approximately 300 students from all around the region an opportunity to collaborate with peers and to work with cutting-edge technology.


 Chris huh/CC-by-sA-3.0
Researchers have genetically altered monkeys in order to create a better model for studying autism.

Scientists replicate autism in monkeys

Chinese scientists have genetically engineered monkeys to show core symptoms of autism, according to a new study conducted at the Chinese Academy of Sciences and published in Nature. By using human gene therapy, the researchers, lead by Zilong Qiu of the Institute of Neuroscience at the Chinese Academy of Sciences, were able to create a line of cynomolgus monkeys, or crab-eating macaques, that expressed several core phenotypes of autism. The genetically-modified monkeys represent the first known primate model of autism, giving researchers a new tool through which they can better understand autism spectrum disorders.


 hans hillewaert/cc-by-sa-3.0
 A new method of preventing frost formation on surfaces is based on the water repellent shell of this beetle.

Desert beetle inspires invention to reduce frost

A team of researchers from Virginia Tech has found a way to control frost growth caused by condensation. By manipulating chemical micropatterns, the researchers may be able to prevent frost from forming in dangerous places, such as airplane parts, condenser coils and windshields.


 nASA
The ninth planet influences the positions of objects in the Kuiper Belt beyond Neptune.

Researchers discover likely ninth planet

Researchers at California Institute of Technology (Caltech) in Pasadena, Calif. have recently discovered evidence of “Planet Nine,” a giant planet located at the outer edges of the solar system.


 james gathany/public domain
 The WHO considers the mosquito-born Zika virus a global emergency.

Zika virus declared global emergency

The current Zika outbreak has spread to more than 20 countries in Latin America and the Caribbean, and the World Health Organization (WHO) estimates that it will infect another four million people by the year’s end.


 leon santhakumar/photography editor
Cocaine causes brain cells to destroy themselves at a damaging rate.

Cocaine catalyzes death of brain cells

Researchers in the Department of Neuroscience at the Johns Hopkins University School of Medicine have found that high doses of cocaine in mice kill brain cells by way of overactive autophagy, a “housekeeping” process through which cells rid themselves of debris and waste.


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