NASA’s leaky Mars lander will get another chance for a launch in 2018; A mysterious rumbling sound is driving residents of this Canadian city mad; Scientists just grew vegetables in ‘Martian’ soil — but there’s a catch; Here’s how the hydra rips its own body open to eat a meal; R2D2 and C-3PO are the first ever grey seal pup twins found in the wild; These birds use a linguistic rule thought to be unique to humans; Scientists reveal the secret behind Mercury’s unusually dark surface; Newly discovered deep-sea octopus looks like an adorable ghost; Lizards trapped in amber for 100 million years may be some of the oldest of their kind;   Rachel Feltman on Science   NASA’s leaky Mars lander will get another chance for a launch in 2018 The InSight may see the light of day. By Rachel Feltman  •  Read more » A mysterious rumbling sound is driving residents of this Canadian city mad The noise has been described as 'running refrigerator' that leaves locals with headaches and sleepless nights By Peter Holley  •  Read more »   Scientists just grew vegetables in ‘Martian’ soil — but there’s a catch There's no way of knowing how good our fake Mars soil really is — plus, the plants might be toxic. By Rachel Feltman  •  Read more »   Here’s how the hydra rips its own body open to eat a meal Hydra are known for their incredible regenerative capabilities. By Rachel Feltman  •  Read more »   ADVERTISEMENT   R2D2 and C-3PO are the first ever grey seal pup twins found in the wild The rare pups were abandoned at just three weeks old By Elahe Izadi  •  Read more »   These birds use a linguistic rule thought to be unique to humans Birds, they’re just like us: They care about grammar, too. By Rachel Feltman  •  Read more »   Scientists reveal the secret behind Mercury’s unusually dark surface An ancient graphite crust may be the culprit. By Rachel Feltman  •  Read more »   Newly discovered deep-sea octopus looks like an adorable ghost The translucent little critter is almost certainly a new species -- and it may be at record-breaking depths. By Rachel Feltman  •  Read more »   Lizards trapped in amber for 100 million years may be some of the oldest of their kind One could be the oldest chameleon ever found. By Rachel Feltman  •  Read more »   ADVERTISEMENT   Recommended for you   Switch The day's top stories on the tech industry and tech in our lives. Sign Up »         Share Speaking of Science:       Twitter      Facebook Trouble reading? Click here to view in your browser. You received this email because you signed up for Speaking of Science. For additional free newsletters or to manage your newsletters, click here. We respect your privacy. If you believe that this email has been sent to you in error or you no longer wish to receive email from The Washington Post, click here. Contact us for help. ©2016 The Washington Post, 1301 K St NW, Washington DC 20071