Indonesian Volcano Dramatic Collapse
The collapse of the Indonesian volcano led to a devastating tsunami in the Sunda Strait. Recently, researchers have examined satellite images of the Indonesian volcano, Anak Krakatau to calculate the amount of ash and rock that sheared off into the sea. Researchers said the volcano lost more than two-thirds of its volume and weight in one week. It is believed that much of volcano’s mass slid into the sea in only one movement which lead to the recent tsunami disaster.
This certainly explains the displacement of water which generated waves of up to 5-meters high. In the Indonesia disaster, more than 400 people are confirmed dead with approximately 20 people missing, while more than 40 000 people have been displaced.
The Centre of Volcanology and Geological Hazard Mitigation (PVMBG) studied pictures from several radar satellites, including the German TerraSAR-X platform and the European Union’s Sentinel-1 constellation. Radars have the advantage of seeing the ground day and night, and being able to pierce clouds. The capability of radars has allowed scientists to have an initial measurement to be made of the volcano’s lost stature, particularly on its western side. What was once the Anak Krakatau’s cone standing some 340m high is now just 110m tall, according to the PVMBG. In terms of volume, 150-170 million cubic meters of the volcano’s material has gone, leaving only approximately 40-70 million cubic meters still in place.
Facebook Removed 8.7 Million Images of Child Nudity in Three Months
Facebook announced that they removed 8.7 million images of child nudity in only three months. The social network giant said that they developed new software to automatically flag any possible sexualized images of children. The software has been put in place last year but it became public recently. Facebook announced that they have another program which can detect possible cases of child grooming related to sexual exploitation.
From the 8.7 million images, 99% of them were removed before any Facebook user reported them as inappropriate.
In 2017, Facebook was criticized by Damian Collins, the chairman of the Commons media committee over the amount of child sexual abuse material on their platform. In 2016, a BBC investigation found evidence that pedophiles are sharing obscene images of children through secret Facebook groups.
Facebook announced that they plan to use their system to spot child nudity and grooming on Instagram as well. A separate technology is used to block any child sexual abuse imagery which was previously reported to authorities.
Facebook’s global head of safety Antigone Davis said in an online video about the new technology:
“Recently, our engineers have been focused on classifiers to actually prevent unknown images, new images.”
Discovered material is reported by Facebook to the National Centre for Missing and Exploited Children (NCMEC). Tony Stower, head of child safety online for the NSPCC said:
“What Facebook hasn’t told us is how many potentially inappropriate accounts it knows about, or how it’s identifying which accounts could be responsible for grooming and abusing children.”
Most Shoppers Mistrust Influencers
According to a new survey most shoppers don’t trust social media influencers. Approximately 4.82% of people said that it was not always clear when an influencer had been paid to promote a certain product.
The Advertising Standards Authority launched new guidelines to help guide influencers to stick to the rules.
The Competition and Markets Authority is also looking at whether social media celebrities announce when they have been paid to promote a product.
According to the survey, researchers found that 54% of 18-to-34-year-old buyers were influenced by influencers’ suggestions. Alastair Lockhart from Savvy Marketing said:
“The shoppers of the UK are a knowledgeable lot and tend to be pretty wise when deciding how much to trust an influencer’s recommendations. However, we can see from the research that it’s not always clear and a lot of younger people, in particular, are influenced by their suggestions.”
The growth and popularity of social media over the past decade, has changed the way marketing and advertising works. A major part of this new trend has been the rise of social influencers on Facebook, YouTube, and Instagram. Cosmetic beauty brands are spending millions of dollars to promote their brands through social influencers.