You're halfway through the week and CTVNews.ca has the top five things to know this Wednesday: A 24-storey highrise burns in the British capital, where officials confirm there have been fatalities; a poultry farm supervisor fired after undercover videos revealed horrific incidents of chickens being abused says he reported similar incidents in the past to his superiors; an Ontario doctor wants an early warning system adopted in hospitals across the country; the Transportation Safety Board releases a report into the deadly sinking of a whale-watching vessel; and an Ontario teen wins big for her Google doodle design.

Plus, for "Dream Big Wednesday," CTVNews.ca speaks to a photographer who spent 30 days travelling the country capturing 150 images to celebrate Canada's upcoming birthday.

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1. Highrise fire: An overnight highrise fire in London, England is still burning. Officials say at least six people have died and more than 50 people were sent to nearby hospitals.

2. Poultry farm: A poultry farm supervisor fired after undercover videos revealed horrific incidents of chickens being abused says he reported similar incidents in the past to his superiors.

3. ER scoring: An Ontario doctor says she would like to see hospitals nationwide adopt and use an early warning system to detect cases of sepsis, a life threatening condition that can be triggered by an infection or an injury. 

4. Sinking report: The Transportation Safety Board will release a report today into the deadly capsizing of a whale-watching boat off the west coast of British Columbia.

5. Optimistic doodle: A Toronto teen has won $10,000 for her work creating a Google doodle that relates to an "optimistic future of Canada."

And one more thing for "Dream Big Wednesday": Earlier this year, photographer Zach Baranowski embarked on a 30-day cross-country road trip to capture 150 images in celebration of Canada's sesquicentennial. From the lush rainforests of British Columbia to Newfoundland's frigid Iceberg Alley, Baranowski shares his favourite images from the trip on CTVNews.ca.

Zach Baranowski