5 things to know on Tuesday, August 2, 2016

Good morning!

Here are the five stories to get you caught up after the long weekend: Health and safety concerns continue to pile up in Rio, just three days before the Olympics kick off; a 15 per cent property tax on foreign homebuyers in Vancouver takes effect; U.S. health officials are urging women to avoid a Zika-stricken part of Miami; Donald Trump is facing growing criticism after insulting the family of a Muslim veteran killed in Iraq; and an asteroid named 101955 Bennu could spell the end of the world in 2175.

1. Rio worries: With just days until the opening ceremony of the Rio Olympics, problems continue to pile up. Water quality is a particular concern, with health officials telling water sport athletes that they should compete with their mouths closed. CTV News is in Rio and has documented the mixed progress in cleanliness and safety in Rio ahead of the games.

2. Property tax takes effect: A 15 per cent property tax on foreign homebuyers in Metro Vancouver takes effect today. The tax is aimed at cooling the city’s red-hot housing market to give locals a chance to buy in, but expert predictions about its effectiveness remain divided.

3. Warning in Miami: U.S. health officials have warned pregnant women to avoid a Zika-stricken section of Miami and to get tested if they've visited the Wynwood arts district since mid-June. All 14 cases of Zika in the U.S. are thought to have originated from the one neighbourhood.

4. Trump facing backlash: Arizona Sen. John McCain is among the growing number of voices condemning Donald Trump's attack on the parents of Humayun Khan, a slain Muslim American soldier, after the Khans challenged Trump at the Democratic National Convention. Many high-profile Republicans have distanced themselves from Trump's attack on the military family.

5. Asteroid coming: Scientists say that an asteroid named 101955 Bennu could spell the end of the world. However, for those who might be a bit concerned about the end of the world as we know it, scientists believe a possible date of impact won't be until 2175.