[NEWS] Seven science links

• Climate change is playing a major role in the wildfires of California. Are we now in the Fire Age? Global News considers.
• The new normal of the Arctic Ocean is to be ice-free. Global News reports.
• Plants first reached land through unexpected horizontal gene transfers. CBC reports.
• Zebra mussels have made it to the Lake of the Woods. Global News reports.
• An artificial leaf that turns carbon dioxide into usable fuel is a remarkable technology. Universe Today reports.
• Earth once hosted nine human species; now it has one. What happened? National Pot considers.
• Thanks to better medical care and preventative measures, people have longer healthy lifespans than ever before. Global News reports.