Millions of people around the globe will participate in Earth Hour, one of the world’s largest grassroots movements for the environment, on Saturday 28 March. Capetonians will have the chance to add their voice to the global drive for positive environmental change with an outdoor adventure to be held at the Kirstenbosch National Botanical Gardens.This year’s adventure entails an after-dark, family-friendly race across Kirstenbosch botanical gardens using torches and headlamps to navigate hidden checkpoints along a 5km course.Justin Smith, World Wide Fund for Nature SA business development head, says there has never been a more important time to come together to shine a light on the environmental issues holding us back. “This year’s Earth Hour Adventure takes place against the backdrop of a deepening climate crisis. We can all make small changes in our own lives and encourage our leaders to make big decisions, like supporting renewable energy.”The first Earth Hour was held in Sydney, Australia, in 2007 as a symbolic lights-out initiative. Today it goes far beyond the symbolic action of “switching off” and has become a catalyst for climate awareness, education, conversation and driving positive legislative and policy changes by harnessing the power of the people and collective action. Smith says the event is a great way for communities to come together in support of the environment.“It’s a fun, family-friendly event in a beautiful natural setting and we invite everyone who can to join us to mark Earth Hour together.” The 5km “dash” will be followed by a bring-your-own picnic on the lawns. Participants need to bring a picnic basket and a blanket (no food will be on sale and there will be no water stations), headlamps and torches, reusable coffee mugs, drinking cups, mugs or bottles. This is a strictly no-waste event and everyone is asked to avoid plastic waste.Live entertainment will keep the good vibes going. Good Hope FM radio presenter Dan Corder will be the MC and pop/R&B singer star Kerwin will perform for guests. Gates will open at 18:00 and the run will start at 19:00.Tickets, available online from the Earth Hour Adventure website, are R180 for adults and R100 for kids (under 6 enter for free). The event is a fundraiser for WWF SA. Proceeds will go towards supporting its conservation efforts..