Artist Justin Guariglia uses a high-tech printer to create art that documents Earth's melting glaciers.

In this episode of On the Evidence, Cindy Hu, a Mathematica data scientist, discusses the prevalence of Poly- and Perfluoroalkyl Substances (PFAS) in our drinking water, as well as their health implications and ways to address them through public policy.

STACK SCORE Mu B122 ca154 pv a

Dewey Library - SB608.C6 M33 2019

After the lockdown was imposed, imports of rough stones dried up, and nearly 70% of workers left for their hometowns in Bihar, Uttar Pradesh, Odisha and interiors of Gujarat.

Barker Library - PN6728.W255 O36 2018

Lewis Library - ML3561.L54 P37 2018

Dewey Library - HG172.S39 A3 2019

In this week’s episode, we turn our gaze to the topic of ad-blockers and paid content. We discuss Vitaly from Smashing Magazine’s recent post looking at how they are funding their content strategy and discuss our own views on paying for digital content.

As always we book end the show with some “bants” including heartfelt thanks to some of our favourite supporters and a nod to a Cornish brewing companies new site.

• Keir’s controversial “Grilled Cheese” post
• The Grilled Cheese Hipster Revival
• Vitaly’s article on Ad-Blockers
• Verdant Brewing Co

'Rishi Kapoor was a complete original.' 'He dazzled the screen and stayed a livewire off it as well,' remembers Sukanya Verma.