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"A powerful coming-of-age story of self-discovery and overcoming fear.”—Kirkus Reviews, starred review Ato hasn’t visited his grandmother’s house since he was seven. He’s heard the rumors that she’s a witch, and his mother has told him he must never sit on the old couch on her porch. Now here he is, on that exact couch, with a strange-looking drink his grandmother has given him, wondering if the rumors are true. What’s more, there’s a freshly dug hole in her yard that Ato suspects may be a grave meant for him. Meanwhile at school, Ato and his friends have entered a competition to win entry to Nnoma, the island bird sanctuary that Ato’s father helped created. But something is poisoning the community garden where their project is housed, and Ato sets out to track down the culprit. In doing so, he brings his estranged mother and grandmother back together, and begins healing the wounds left on the family by his father’s death years before. And that hole in the yard? It is a grave, but not for the purpose Ato feared, and its use brings a tender, celebratory ending to this deeply felt and universal story of healing and love from one of Ghana’s most admired children’s book authors.
"Originally published as Ghostbusters: crossing over issues #1-8 and Ghostbusters annual 2018"--Publisher marketing.
This volume is written by leading scientists in the field, who review the current state of our knowledge of tidal streams in the Milky Way, the Andromeda galaxy, and in other nearby galaxies. The cosmological origins of dwarf galaxies and the physical processes by which they are tidally disrupted into streams and incorporated into galaxy halos are discussed. The techniques that have been used to identify tidal streams are presented and will be useful to researchers who would like to find substructures in the next generation of optical sky surveys, including Pan-STARRS and LSST. The methods that are currently under development to constrain both large scale distribution of dark matter in the Milky Way and the (small scale) lumpiness of the dark matter distribution are also explained. The authors also provide motivation for future spectroscopic surveys of Milky Way halo stars, which will aid both in the identification of tidal streams and the constraint of dark matter properties. This volume is aimed at graduate students who are beginning this field of research, but is also a resource for researchers who study tidal streams and related fields. In addition to presenting the physical processes by which tidal streams are created, it also reviews the current state of the observations and the progress towards utilizing these observations to constrain the distribution of dark matter in the Milky Way. The book will introduce anyone with a background in astrophysics to the field of tidal streams.
Alex Pheby's Mordew launches an astonishingly inventive epic fantasy trilogy. God is dead, his corpse hidden in the catacombs beneath Mordew. In the slums of the sea-battered city, a young boy called Nathan Treeves lives with his parents, eking out a meagre existence by picking treasures from the Living Mud and the half-formed, short-lived creatures it spawns. Until one day his desperate mother sells him to the mysterious Master of Mordew. The Master derives his magical power from feeding on the corpse of God. But Nathan, despite his fear and lowly station, has his own strength—and it is greater than the Master has ever known. Great enough to destroy everything the Master has built. If only Nathan can discover how to use it. So it is that the Master begins to scheme against him—and Nathan has to fight his way through the betrayals, secrets, and vendettas of the city where God was murdered, and darkness reigns. At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.
One summer morning, Annie and her brother Bradley venture down to a nearby stream to play, but find the water murky and devoid of frogs and minnows. They hear a splashing sound behind them, and are startled to see their neighbor, Ms. Carson, approaching them, wearing rubber boots and carrying a box of test tubes. It turns out Ms. Carson is an aquatic ecologist whose job it is to test the health of local streams. After Annie mentions all the green slime found in the stream, Ms. Carson explains that it is the result of a build up of algae caused by excessive amounts of nutrients flowing into the stream. Ms. Carlson and the kids then gather some water samples in test tubes, to which they add special chemicals that reveal that the water contains excessive amounts of phosphorous and nitrogen. Ms. Carlson explains that these are derived from fertilizer and pesticides that their neighbors have been using to excess. Upon hearing this news, Annie and Bradley begin a special campaign to get their neighbors to reduce the amount of chemicals they use in their lawns and gardens, which results in a healthier stream the following year.