This month, people across the US and around the world will turn their attention to Iowa to see who emerges as the state’s favoured presidential candidate. But what exactly is the Iowa caucus? How does it work? And why does it matter?

This Friday, the Guardian’s Sam Levine will chair a panel of local journalists and caucus experts to dissect the Iowa caucus, in this free online event live from Iowa city. Everyone who registers will also receive the video recording of the event the following day.

Friday 12 January, See page for local time

With adverts on display, supporters on board and partner restaurants promoting their meat and dairy-free dishes, Veganuary encourages people to go vegan during the month most commonly associated with resolutions and change. Does a vegan diet have a positive change on the environment?

Join our expert panel, chaired by the Guardian’s Hannah Moore, as they look into the realities and myths, and the pros and cons of being vegan, in this livestreamed event.

Tuesday 30 January, 8pm-9.15pm GMT

In an effort to impress voters, Rishi Sunak reshuffled his cabinet, brought back David Cameron, and staged a showdown with the courts over the highly controversial plan to send asylum seekers to Rwanda. But as we head towards a general election and the polls show no signs of trust in the Tories, have they finally run out of road?

Join the Guardian’s Gaby Hinsliff and our panel as they explore a Conservative party in crisis, in this livestreamed event.

Monday 29 January, 8pm–9.15pm GMT