Atmospheric readings from Cape Grim, Tasmania along with two stations in Hawaii and Alaska, are closely watched as they date back decades and closely track a range of pollutants from ozone-depleting chemicals to the various greenhouse gases resulting from burning fossil fuels and clearing forests. Sites in the northern hemisphere exceeded CO2 400 ppm from 2012 onwards. But as the region has greater seasonal variation, mostly because there is more terrestrial vegetation, CO2 concentrations dropped back below that mark each spring. Now Cape Grim, which offers some of the purest air in the world for measuring climate change, has passed CO2 400 ppm, and it will need a huge global effort to curb greenhouse gas emissions to push the level back down.

HUMM is a marketplace connecting women and their wardrobes to others to share their designer fashion. Users are able to browse by brand, colour, size, and location, making a selection by choosing their event date from the calendar and a date for shipping or meeting delivery option. www.hummstyle.com

Drone racing began as an amateur sport in Australia in late 2014. Racing drones are now fitted with front cameras that capture footage as they fly through obstacle courses. Each individual player monitors their drone's performance through VR goggles with FPV (first person view) while trying to get the fastest time and the most accurate movements. Fans can have their own FPV goggles and have a view of what the pilot is seeing. https://www.fastcodesign.com/3059129/making-it/the-quest-to-make-drone-racing-americas-next-big-sport

Australia's first national Aboriginal and Torres Strait Islander youth mental health campaign led by youth was developed by an indigenous creative agency. www.gilimbaa.com.au

Tapview is like a read more button with a small payment attached. You don?t have to lock yourself into a subscription - instead you just browse what you want, and at the end of the month you're charged for your total usage. You only need the one account to view content that interests you across multiple locations. www.tapview.com

A new global inclusion network called Engage was launched today by Harvey Nash and IAG in Sydney. The opportunity highlighted is Reverse Mentoring to help aspiring young people advance their careers and older board members to engage more in the digital world.