Meet Arachnid, the crawler hunting child abuse photos across the web

One in six boys in the United States has experienced sexual abuse before turning 18. With few recovery options in real life, more of them are going online for support.

An app that uses A.I. to scans lung X-rays is helping two hospitals in rural and remote parts of India to identify cases of tuberculosis that they otherwise would have been likely to misdiagnose. Medical professionals caution that the app is not a replacement for a clinician's diagnosis but say when used in conjunction with a clinical assessment, the interpretation of a chest X-ray is likely to be more accurate.

The technology world, plagued by a lack of privacy and security, is looking for solutions. To increase trustworthiness of computers, transactions, and pretty much anything online, blockchain is being used all around the world. While blockchain was first used by the cryptocurrency Bitcoin, it is now being used in such diverse ways as to track business products, trade in the stock market, and support musical collaboration. Blockchain's applications are continuing to grow and spread.

The South African Centre for Infectious Disease Surveillance is piloting a program to use smartphone technology to report and respond to infectious disease outbreaks. The program trains community members to recognize signs of infectious diseases, such as vomiting and diarrhea, and report them through their smartphones. These reports are relayed to a team of specialists who track the location and frequency of these reports to determine if an outbreak of disease is occurring and respond accordingly.

In Nigeria, a new app is helping to notify shop-owners when their food approaches its expiration date. Shop-owners can then enact heavy discounts on the item, which are sold to participating non-governmental organizations that distribute the food to those in need. The app, Chowberry, has helped "20,000 households across Nigeria... and receives 6,000 daily visits."

Prescription drug mointoring programs provide a doctor with information about a patient’s prescriptions and—in some states—drug-related hospitalizations and arrests. With this tool, doctors are better able to identify drug-seeking behavior and intervene with at risk patients.

An Army veteran who served in Iraq saw that post traumatic Stress disorder afflicted too many of his peers. He started a mental health technology company that tracks health data from heart rate to exercise to time spent meditating or journaling. The app can signal to users when they should check in with professionals. The business is attracting funding and partnerships.

An ophthalmologist has created a smartphone application that allows not just doctors, but also non-specialists such as teachers, to conduct eye tests. The application helps those living in remote areas to access a service they otherwise may not be able to get and also allows for the few ophthalmologists who live in the area to only see the cases that are deemed necessary.

The San Antonio Independent School District developed an app to help combat the Covid-slide among its students, including English Language Learning students. The app tracks interactions, class attendance, and completed assignments, but also correspondence and in-person interactions. Administrators took the data collected on its close to 50,000 students and developed strategies to direct special attention or make contact with students with decreased engagement. Out of 48,000 students, only 142 didn't have a contact log.

Prisons in the United States are overcrowded with many non-violent offenders and the cost to keep them in jail consumes public budgets. Criminal justice reform has attracted bipartisan interest with diverse proposals to aid adjust the incarceration rate. The Urban Institute has developed an interactive “prison population forecaster,” which helps citizens to assess the impact of different policies.