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Grades shouldn’t be introduced too early

Assigning marks in Grade 7 can have negative effects. A new study shows that the practice can affect pupils’ academic performance and how they experience the transition to secondary school.

CPR

Predicting how CPR will work minutes ahead

After examining 298 patients with cardiac arrest, researchers found that ECG markers can provide a clue as to how the treatment is working — as much as four to five minutes into the future.

NOTES

Tracking whales as they cruise the Arctic

For the first time ever, researchers have been able to track eight fin whales in near real time for five hours, as they swam along a stretch of fibre-optic cable line in the Arctic. The breakthrough suggests that fibre-optic cable networks could be harnessed to help prevent whale deaths by ship strikes.