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Hydrophobic Ice More Common than Thought

Researchers have observed the formation of 2D ice on gold surfaces that were thought to be too hydrophilic and too rough to support this type of ice.


Mobile devices use facial recognition technology to help users quickly and securely unlock their phones, make a financial transaction or access medical records. But facial recognition technologies that employ a specific user-detection method are highly vulnerable to deepfake-based attacks that could lead to significant security concerns for users and applications, according to new research involving the Penn State College of Information Sciences and Technology.

Deepfakes expose vulnerabilities in certain facial recognition technology

Mobile devices use facial recognition technology to help users quickly and securely unlock their phones, make a financial transaction or access medical records. But facial recognition technologies that employ a specific user-detection method are highly vulnerable to deepfake-based attacks that could lead to significant security concerns for users and applications, according to new research involving the Penn State College of Information Sciences and Technology.

The researchers found that most that use facial liveness verification—a feature of that uses computer vision to confirm the presence of a live user—don’t always detect digitally altered photos or videos of individuals made to look like a live version of someone else, also known as deepfakes. Applications that do use these detection measures are also significantly less effective at identifying deepfakes than what the app provider has claimed.

“In recent years we have observed significant development of facial authentication and verification technologies, which have been deployed in many security-critical applications,” said Ting Wang, associate professor of information sciences and technology and one principal investigator on the project. “Meanwhile, we have also seen substantial advances in deepfake technologies, making it fairly easy to synthesize live-looking facial images and video at little cost. We thus ask the interesting question: Is it possible for malicious attackers to misuse deepfakes to fool the facial verification systems?”

This Gates-Backed Startup Builds Modular Homes Out of Energy-Efficient Panels

Companies specializing in cutting-edge construction techniques are aiming to make a difference by churning out high-quality homes at a lower cost than traditional industry standards. Among these are 3D printed homes, “foldable” homes, and homes that ship in kits then are assembled like Ikea furniture.

Now a new player is joining the list, and it just got a serious financial boost. Vantem Global has already helped construct a total of over three million square feet of living space in six different countries, and earlier this month closed a Series A funding round co-led by Breakthrough Energy Ventures (Breakthrough was founded by Bill Gates in 2015 to invest in sustainable energy and emissions-reduction technologies).

Vantem’s energy-efficient prefabricated homes are made of structural panels. The panels were designed as a replacement for brick and cement, which are expensive, difficult to make, and heavy on emissions. Each panel consists of an insulating layer sandwiched by tiles made of a cement-like material. Since the panels are more similar to cement than wood or plastic are, they’re more likely to be positively perceived by customers who are used to cement (as many in Latin America are, where Vantem has thus far focused most of its construction).

Keith Camhi — Techstars Future of Longevity Accelerator — Innovative Solutions For Older Adults

Innovative Solutions For Unmet Needs Of Older Adults & Their Caregivers — Keith Camhi, Managing Director, Techstars Future of Longevity Accelerator — A Partnership With Melinda Gates Pivotal Ventures.


Keith Camhi is Managing Director, Techstars Future of Longevity Accelerator (https://www.techstars.com/accelerators/longevity), a program, run in partnership with Pivotal Ventures (https://www.pivotalventures.org/), an investment and incubation company created by Melinda French Gates, focusing on innovative solutions to address the unmet needs of older adults and their caregivers. The longevity accelerator core program themes include: Caregiver Support, Care Coordination, Aging in Place, Financial Wellness and Resilience, Preventive Health (both Physical and Cognitive), and Social Engagement.

Keith was previously the SVP of Accelerators for Techstars globally and was inspired to move to the MD role for the longevity program based on having built a venture-backed startup serving older adults himself, having experienced the gaps in America’s care giving infrastructure firsthand, and wanting to support entrepreneurs who are building solutions to address this substantial market opportunity.

Techstars is a global investment business that provides access to capital, one-on-one mentorship, a worldwide network and customized programming for early-stage entrepreneurs. It was founded in 2006 in Boulder, Colorado. As of May 2022, the company had accepted over 2,900 companies into its accelerator programs with a combined market capitalization of US$71 billion.

Prior to Techstars, Keith founded and led the rapid growth of two tech companies in the health and fitness industry – one that reached #20 on the Deloitte Fast 500, and another that made Entrepreneur’s Franchise 500 three times. He has raised over $50 million in venture funding, holds several patents for sensor and machine vision technology, has been an angel investor and LP in several venture funds, and enjoys mentoring promising startups.

China’s debt bomb looks ready to explode

Minxin Pei is professor of government at Claremont McKenna College and a nonresident senior fellow of the German Marshall Fund of the United States.

Confidence in the safety of Chinese banks has been badly shaken by the failure of several small banks in Henan Province in April this year. In terms of their assets of about 40 billion yuan ($6 billion) and the number of customers, roughly 400,000, the shuttered rural banks are minions in China’s financial system.

Mobile Technology and Home Broadband 2021

Smartphone ownership (85%) and home broadband subscriptions (77%) have increased among American adults since 2019 – from 81% and 73% respectively. Though modest, both increases are statistically significant and come at a time when a majority of Americans say the internet has been important to them personally. And 91% of adults report having at least one of these technologies.

A Pew Research Center survey of U.S. adults conducted from Jan. 25 to Feb. 8, 2021, also finds that some Americans have difficulties when trying to go online. Some 30% of adults say they often or sometimes experience problems connecting to the internet at home, including 9% who say such problems happen often. Still, a majority of Americans say these connection troubles occur rarely (41%) or never (21%).

While there has been slight growth in the share who say they subscribe to high-speed internet, about a quarter of the population still does not have a broadband internet connection at home. And broadband non-adopters continue to cite financial constraints as one of the most important reasons why they forgo these services. Among non-broadband users, 45% say a reason why they do not have broadband at home is that the monthly cost of a home broadband subscription is too expensive, while about four-in-ten (37%) say the same about the cost of a computer. Beyond cost barriers, a little fewer than half of non-users cite having other options for internet access or the fact that their smartphone does everything online they need as a reason why they do not have a high-speed internet connection at home.