[ i ] How COVID-19 human challenge trials work -- and why I volunteered | Sophie Rose
[ i ] Could we treat spinal cord injuries with asparagus? | Andrew Pelling
[ i ] How quinoa can help combat hunger and malnutrition | Cedric Habiyaremye
[ i ] A playful exploration of gender performance | Jo Michael Rezes
[ i ] What happens after we develop a COVID-19 vaccine? | Johanna Benesty
[ i ] The mood-boosting power of crying | Kathy Mendias
[ i ] A magical mantra for nurturing a blissful life | JayaShri Maathaa
[ i ] How the new generation of Latinx voters could change US elections | María Teresa Kumar
[ i ] To future generations of women, you are the roots of change | Gloria Steinem
[ i ] How to be fearless in the face of authoritarianism | Sviatlana Tsikhanouskaya
[ i ] Theranos, whistleblowing and speaking truth to power | Erika Cheung
[ i ] I stepped out of grief -- by dancing with fire | Danielle Torley
[ i ] The radical act of choosing common ground | Nisha Anand
[ i ] What crows teach us about death | Kaeli Swift
[ i ] How to foster productive and responsible debate | Ishan Bhabha
[ i ] The power of venom -- and how it could one day save your life | Mandë Holford
[ i ] What the Irish wake teaches us about living and dying | Kevin Toolis
[ i ] Climate change is becoming a problem you can taste | Amanda Little
[ i ] What if a US presidential candidate refuses to concede after an election? | Van Jones
[ i ] Can we create vaccines that mutate and spread? | Leor Weinberger
[ i ] What it takes to create social change against all odds | Ralph Nader
[ i ] Why children stay silent following sexual violence | Kristin Jones
[ i ] How to reduce the wealth gap between Black and white Americans | Kedra Newsom Reeves
[ i ] Could CBD help opioid users overcome addiction? | Yasmin Hurd
[ i ] How businesses can serve everyone, not just shareholders | Dame Vivian Hunt
[ i ] How Ikea is growing its business while shrinking emissions | Jesper Brodin and Pia Heidenmark Cook
[ i ] The life unfolding inside your cells, revealed in 3D | Gokul Upadhyayula
[ i ] On time and water | Andri Snær Magnason
[ i ] Our moral imperative to act on climate change -- and 3 steps we can take | His Holiness Pope Francis
[ i ] Apple's promise to be carbon neutral by 2030 | Lisa Jackson and Liz Ogbu
[ i ] Lessons on leaving the world better than you found it | Sophie Howe
[ i ] How to be a good ancestor | Roman Krznaric
[ i ] This decade calls for Earthshots to repair our planet | Prince William
[ i ] Community-powered solutions to the climate crisis | Rahwa Ghirmatzion and Zelalem Adefris
[ i ] How we could make carbon-negative concrete | Tom Schuler
[ i ] A concrete idea to reduce carbon emissions | Karen Scrivener
[ i ] How to decarbonize the grid and electrify everything | John Doerr and Hal Harvey
[ i ] A "forest generation" living in harmony with nature | Ernestine Leikeki Sevidzem
[ i ] The global movement to restore nature's biodiversity | Thomas Crowther
[ i ] 24 hours on Earth -- in one image | Stephen Wilkes
[ i ] Climate change is our reality. Here's how we're taking action | Al Gore, Gloria Kasang Bulus, Nana Firman, Ximena Loría and Tim Guinee
[ i ] How cities are detoxing transportation | Monica Araya
[ i ] The energy Africa needs to develop -- and fight climate change | Rose M. Mutiso
[ i ] Fossil fuel companies know how to stop global warming. Why don't they? | Myles Allen
[ i ] India's historic opportunity to industrialize using clean energy | Varun Sivaram
[ i ] The city planting a million trees in two years | Yvonne Aki-Sawyerr
[ i ] The 15-minute city | Carlos Moreno
[ i ] The joy of taking out the trash | Aparna Nancherla
[ i ] Amazon's climate pledge to be net-zero by 2040 | Dave Clark and Kara Hurst
[ i ] If trees could speak | Elif Shafak
[ i ] To save the climate, we have to reimagine capitalism | Rebecca Henderson
[ i ] Kids are speaking up for the environment. Let's listen | Olafur Eliasson
[ i ] Europe's plan to become the first carbon-neutral continent | Ursula von der Leyen
[ i ] Make your actions on climate reflect your words | Severn Cullis-Suzuki
[ i ] The case for stubborn optimism on climate | Christiana Figueres
[ i ] Climate justice can't happen without racial justice | David Lammy
[ i ] The race to a zero-emission world starts now | António Guterres
[ i ] Cities are driving climate change. Here's how they can fix it | Angel Hsu
[ i ] 10 years to transform the future of humanity -- or destabilize the planet | Johan Rockström
[ i ] The fight for civil rights and freedom | John Lewis and Bryan Stevenson