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Venezuelans Want What We All Want
After weeks of student protests, tensions in Venezuela escalated last week as massive demonstrations in Caracas turned violent. Riot police cracked down on peaceful protesters calling for an end to widespread government corruption, rampant crime, and the skyrocketing cost of living. At least three people have been killed and many more injured.
As is always the case, these uprising are the result of years of bad government, as Mashable's Lorenzo Franceschi-Bicchierai explains:
Crime has hobbled the economy, which was already struggling since Chavez became President. Through the years, the former leader imposed socialist, anti-private sector policies that nationalized most of the economy. The reforms slowed down business and scared off external investments.
In the last few months, the situation has worsened. Serious food shortages have plagued the country for a year. Venezuela's currency exchange rate with the U.S. dollar has dropped from 8 to 1 at the time of Chavez's death, to its current rate of 87 to 1. Rating agencies have downgraded government bonds to "junk," and inflation is up to almost 60%, according to Bloomberg.
Venezuela has been heralded by some as a glorified socialist experiment since Chavez took power in 1999, as James Bloodworth points out in The Independent; but liberals enamored with socialism have to stop defending Venezuela's repressive government which labels demonstrating university students and opposition leaders as "terrorists":
The response by the authorities to the protests has merely highlighted once again the government's unwillingness to tolerate dissent. Leopoldo Lopez, a former mayor and one of the protest organisers, has had an arrest warrant issued against him and videos have emerged of students being pistol whipped and kicked by armed policeman. As if taking its cue straight from the Soviet playbook, the government has blamed a “fascist upsurge” for the violence and “saboteurs” for the disintegration of the economy.
There have demonstrations in support of the government. But that should be expected considering that the government controls the media and has even censored Twitter--one of the few outlets of freedom of information available to Venezuelans.
How hard of a concept is it to grasp that people do not want to be ruled by a repressive regime? From Syria to Ukraine, totalitarian governments are being forced to confront the universal desire for freedom.
Image credit: andresAzp/Flickr
A Mercury-bound spacecraft's noisy flyby of our home planet.
- There is no sound in space, but if there was, this is what it might sound like passing by Earth.
- A spacecraft bound for Mercury recorded data while swinging around our planet, and that data was converted into sound.
- Yes, in space no one can hear you scream, but this is still some chill stuff.
First off, let's be clear what we mean by "hear" here. (Here, here!)
Sound, as we know it, requires air. What our ears capture is actually oscillating waves of fluctuating air pressure. Cilia, fibers in our ears, respond to these fluctuations by firing off corresponding clusters of tones at different pitches to our brains. This is what we perceive as sound.
All of which is to say, sound requires air, and space is notoriously void of that. So, in terms of human-perceivable sound, it's silent out there. Nonetheless, there can be cyclical events in space — such as oscillating values in streams of captured data — that can be mapped to pitches, and thus made audible.
Image source: European Space Agency
The European Space Agency's BepiColombo spacecraft took off from Kourou, French Guyana on October 20, 2019, on its way to Mercury. To reduce its speed for the proper trajectory to Mercury, BepiColombo executed a "gravity-assist flyby," slinging itself around the Earth before leaving home. Over the course of its 34-minute flyby, its two data recorders captured five data sets that Italy's National Institute for Astrophysics (INAF) enhanced and converted into sound waves.
Into and out of Earth's shadow
In April, BepiColombo began its closest approach to Earth, ranging from 256,393 kilometers (159,315 miles) to 129,488 kilometers (80,460 miles) away. The audio above starts as BepiColombo begins to sneak into the Earth's shadow facing away from the sun.
The data was captured by BepiColombo's Italian Spring Accelerometer (ISA) instrument. Says Carmelo Magnafico of the ISA team, "When the spacecraft enters the shadow and the force of the Sun disappears, we can hear a slight vibration. The solar panels, previously flexed by the Sun, then find a new balance. Upon exiting the shadow, we can hear the effect again."
In addition to making for some cool sounds, the phenomenon allowed the ISA team to confirm just how sensitive their instrument is. "This is an extraordinary situation," says Carmelo. "Since we started the cruise, we have only been in direct sunshine, so we did not have the possibility to check effectively whether our instrument is measuring the variations of the force of the sunlight."
When the craft arrives at Mercury, the ISA will be tasked with studying the planets gravity.
The second clip is derived from data captured by BepiColombo's MPO-MAG magnetometer, AKA MERMAG, as the craft traveled through Earth's magnetosphere, the area surrounding the planet that's determined by the its magnetic field.
BepiColombo eventually entered the hellish mangentosheath, the region battered by cosmic plasma from the sun before the craft passed into the relatively peaceful magentopause that marks the transition between the magnetosphere and Earth's own magnetic field.
MERMAG will map Mercury's magnetosphere, as well as the magnetic state of the planet's interior. As a secondary objective, it will assess the interaction of the solar wind, Mercury's magnetic field, and the planet, analyzing the dynamics of the magnetosphere and its interaction with Mercury.
Recording session over, BepiColombo is now slipping through space silently with its arrival at Mercury planned for 2025.
Erin Meyer explains the keeper test and how it can make or break a team.
- There are numerous strategies for building and maintaining a high-performing team, but unfortunately they are not plug-and-play. What works for some companies will not necessarily work for others. Erin Meyer, co-author of No Rules Rules: Netflix and the Culture of Reinvention, shares one alternative employed by one of the largest tech and media services companies in the world.
- Instead of the 'Rank and Yank' method once used by GE, Meyer explains how Netflix managers use the 'keeper test' to determine if employees are crucial pieces of the larger team and are worth fighting to keep.
- "An individual performance problem is a systemic problem that impacts the entire team," she says. This is a valuable lesson that could determine whether the team fails or whether an organization advances to the next level.